Next tuesday. In the past 24 hours, voters in those states got a firsthand look at the chaos thats been erupting around Donald Trumps president ial campaign. In a moment, well hear from the cbs news digital journalist who was caught in the turmoil in chicago last night. But first, Dean Reynolds shows us what happened at a trump rally in dayton, ohio, today. Reporter donald trump rallies are seldom without incident, and today in dayton was no exception. Id do it myself about whoa, whoa reporter somebody rushed the stage but was quickly disabiewlingsed of going further by the secret service, which formed a protective cordon around the candidate. I was ready for him, but its much easier if the cops do it. Dont we agree . cheers and applause reporter though he tried to make light of it, the mood at trump rallies has become an issue as big as the rallies themselves. Thousands of the protesters jammed an arena and adjoining streets last night in chicago, confronting Trump Supporters and causing a cancellation of the whole event. Trump said he had consulted the Chicago Police before scrubbing his speech, but the police says sade no one had talked to them. And is when Trumps Campaign named a Police Commander as their security liaison, the commander denied he spoke to anyone. Whatever the case, there were a handful of arrests, including cbs news journalist sopan deb, taken into custody for allegedly resisting officers. Though video of the incident showed no resistance. This afternoon at his event in cleveland, trump could easily hear hecklers in the crowd, and he suggested they were misbehaving democrats. Dont worry about them. Let them rot. Look, its a bernie person. Its a bernie hello, bernie hey, bernie get your people in line, bernie reporter trump blamed organized demonstrators he actually called them thugs for his trouble in the windy city and said their attempts to shut down free speech would backfire. It just makes all of our friends and supporters more angry. Were going to go to the polls on tuesday, and were going to be resounding victory, resounding. Reporter and, speaking of victory, five states will vote on tuesday, jim, and polls have donald trump either competitive or ahead in all of them, including the primary here in missouri. Axelrod thank you, dean. And dean mentioned the incident involving our digital journalist sopan deb. Hes been covering Trumps Campaign since it started last summer, but deb says hes not seen anything like he saw last night. Back it up back it up sopan deb was on the floor of the arena as tensions built, raw emotions on both sides. Build those walls axelrod he interviewed both protesters and Trump Supporters. These people are protesting, and exercising their free speech, and the irony of that is, we dont get to have our side. Tons of organizations all over the campus got together, had meetings all week to stop this atrocity from happening. Axelrod police cleared the pavilion and streets outside were quickly blocked. Tensions were high. Deb shot video of an arrest. Police surrounded a man whose face was bloodied. Protesters screamed at police. Black lives matter black lives matter axelrod deb continued to roll as police kept watch. Without warning, deb was grabbed from behind and thrown to the ground. Back up back up whoa, whoa, whoa, whoa whoa, bhoa whoa put your hands behind your back hands behind your back axelrod deb says as he was hand custody an officer placed his boot on debs neck to keep him in place. Another news crew captured these images of deb being taken into custody. Illinois state Police Charged him with resisting arrest, although there was no sign of that in either of the videos. On the tape, deb identifies himself as a credentialed member of the news media. I have i. D. Press cecial. I have press credentials i can show you. Axelrod he was placed in the backave police van while his cam rafs left nearby. It was returned to deb after his release. Sopan deb says trumps rallies have grown more hostile. There have been protests going on at donald trump rallies for months and months and months. This is nothing new. However, there has definitely been a recent uptick. I have certainly never seen anything like last night. That was unprecedented. There have been other groups of coordinated protests at pastorallies, but nothing as massive as what i saw last night. Axelrod you can see sopan debs full interview tomorrow morning on face the nation. John dickerson will also speak with donald trump, bernie sanders, and john kasich. Today, the president ial candidates, as well as the president himself, spoke about the hostility and violence weve seen at trump rallies lately. Heres Julianna Goldman. Reporter Donald Trumps opponents roundly condemned the escalating violence at the republican frontrunners rallies. I still at this moment continue to intend to support the republican nominee, but getting harder every day. Reporter marco rubio and john kasich opened the door to not supporting trump if he becomes their partys nominee. Obviously, look, the protesters last night are not blames, but i think we also have to look at the rhetoric coming from the frontrunner in the president ial campaign. Donald trump has created a toxic environment, and a toxic has allowed his supporters and those who sometimes seek confrontation to come together in violence. Reporter but trumps rivals are walking a rhetorical tightrope. On the one hand, theyre trying to hold protesters accountable. On the other hand, theyre blame the billionaire businessman for foster a hostile climate and trying to avoid alienating his supporters. Weve seen some protesters that take speech into intimidation, into violence, into trying to silence anyone who might disagree with them. That is wrong. I think it is also true that any campaign, responsibility begins and ends at the top. Reporter some of the protesters last night did confirm to cbs news they are supporters of bernie sanders, and trump tweeted, it is clinton and sanders people who disrupted my rally in chicago. I dont think our supporters are inciting. What our supporters are doing is responding to a candidate who has in fact, in many ways, encouraged violence. Reporter both sander sanderd Hillary Clinton say its up to trump to tell his supporters to stand down. If you play with matches, youre going to start a fire you cant control. Thats not leadership. Thats political arson. Reporter president obama also weighed in at a fundraiser today in dallas. Jim, he said leaders are those who aspire to be leaders, must reject violence and efforts to spread fear, and he said if they refuse to do that, they dont deserve our support. Axelrod Julianna Goldman covering for us in washington tonight. Juliana, thank you. The system that brought torrential rains and historic floods to the south is finally weakening, but flood watches and warnings are posted in at least six states tonight. David begnaud is in bossier city, louisiana. Reporter this afternoon, floodwater was seeping through sandbags in bossier city. Crews added more bags in the lowlying vulnerable areas along a levee which protect protects t 3500 homes. The Red Chute Bayou rose seven inches overnight. The house of chris smith and his wife laura backs up to the levee. They were ordered to evacuate but they decided not to. It was a very personal decision. I had surgery on monday, to have a hysterectomy to get rid of Cervical Cancer and i was sales ared not to travel and we made the decision if it got high enough wed leave but right now well stay put. Reporter west of here, the lake is expected to rise to 179 feet, flooding not seen in nearly 50 years. Sheriff steve prayeder sometimes its too late to act, so just get your stuff and get gone. Reporter across louisiana there is moderate to major flooding on 50 of the states s bayous and rivers. In fulsome, laurie barrows family spent most of friday trying to reach her. They found her trapped in her own home. She lost everything during hurricane katrina. Its heartbreaking. Its deja vu. Im getting older, tireder, and i dont feel like doing this again. Reporter back in north louisiana in bossier city, the smith family is ready with sandbags. The the red cross called me yesterday and asked if i could help with any disaster in the area. And i told them i have to worry about my own home before i go help others right now. Reporter and this is the levee right behind the smith home. The seepage we showed you a moment ago thas stopped. They brought in more sandbags, laid them here, nothing more is flowing across. But you can see the seepage from earlier from the last few hours and those are some of the homes theyre worried about. The mayor said dont let the sunshine deceive you. Were not out of the woods just yet. Axelrod David Begnaud in the devastation of louisiana. Thank you very much. It is not the quantity of water but the quality of it thats a problem in newark, new jersey. This week, water fountains were shut down in city schools due to lead contamination. As Jericka Duncan reports, evidence suggests officials knew about this problem for years. Reporter a moment memo from the district sent on august 30 of 2014 mandates all schools run and flush each water fountain for two minutes daily before school opens. The same steps apply for calf teara faucets prior to food prep usage. And principals were instructed to tell students and staff to run fountains for at least 30 seconds before drinking the water. Annual water contamination tests at newark Public Schools were conducted between december and february. On wednesday, the district turned off water at 30 schools after results revealed unsafe lead levels. I send my son to School Every Day to be safe. This his safe haven and then lead is in his water. Reporter lead in Drinking Water should not exceed 15 parts per billion. At bard high school, one sample had 558. Branch brook elementary, 194, while another Elementary School tested at 193. Sabrina oliver says her Childrens School was impacted. Its water. I mean, i never thought the water was good in newark anyway, but thats thats alarming. Reporter Health Officials say its not newarks water thats the problem. Its when lead from old pipes and fixtures leach into the water similarly to what happened in flint, michigan. Too much lead can damage the nervous system, and Young Children are most at risk. Next week begins a new round of lead testing at all 67 schools in the district. Jim, Officials Say that the Newark Health clinic is providing free lead testing for children. Axelrod jericka, thank you very much. Up next, the device thats planting seeds for rain. And sled dogs attacked at the iditarod when the cbs evening news continues. Axelrod driving rain and high winds continued to batter california today. Power was knocked out in ryder county in southern california. Up north in mendocino county, a mudslide knocked a caltrans truck down a bank and almost into the ocean. Todays storms are providing help with the states historic drought, but as carter evans reports, after four years of waiting, scientists in california are through relying on nature alone. Reporter rainfall like this is so rare in southern california, that Los Angeles County is hoping to squeeze out every drop by cloud seeding from ground stations like this one. There are 10 of these locations throughout the san gabriel mountains. Reporter kerjon lee is with the l. A. County department of public works, which is paid a half a Million Dollars to a cloud seeding contractor, promising to make more rain. When you say the term cloud seeding, a lot of people think its just hocuspocus. Well, this actually comes with a lot of Science Behind it. Reporter cloud seeding works when silver iodide particles are sprayed into a saturated cloud, acting like a nucleus that traectses super cooled water vapor that freezes into ice. Once the ice becomes heavy enough it falls and becomes rain. Graeme stephens studies clouds and weather systems for nasa. Does cloud seeding work . Its been shown under certain circumstances, it works, by in a very marginal way, and even then it would be difficult to prove how much increase has occurred. Reporter l. A. County officials insist they can get up to 15 more rainfall whenw no health risks. Do people have to worry that their Water Systems may be contaminated from cloud seeding . Cloud seeding is absolutely safe. Reporter how much more water do you think you can get out of the clouds . We think we can get an additional 1. 5 billion gallons a year. Reporter and that would be a welcome sight in southern californias depleted reservoirs. Carter evans, cbs news, los angeles. Axelrod the new doping scandal involving a drug most americans have never heard of. Axelrod tennis star Maria Sharapova started her suspension today for using a banned substance, but as Jonathan Vigliotti reports, sharapova is not the only russian athlete whos used it. Reporter a speed skater, weightlifter and volleyball player, all russian, are the latest athlete to test positive for meldonium. Russian tennis star Maria Sharapova made the littleknown drug a household name this week when she admitted to using it. I made a huge mistake, and i ive let my fans down. Reporter in a facebook posting friday, she said she didnt know the substance was banned and promised to fight her suspension. Meldonium is a heart medication available over the counter in Eastern Europe thats known for boosting endurance by increasing blood flow. Russian officials were baffled when the the World Antidoping Agency banned the drug on january 1. Our main goal is to express disagreement with the including of this drug on the list said yulia miroshnikova, with russias federal sports agency. 99 athletes have failed the drug test so far. This latest scandal could not have come at a worse time for russian sports. In november, russias Athletic Team was suspended from the 2016 rio summer olympics after being accused of running a statesponsored doping program. On friday, the International Association of athletics federations met to consider reinstating the team. President Sebastian Coe while progress has been made, the Council Unanimously agreed that the russian authorities need to undertake further, significant work to satisfy the reinstatement conditions so rusafs should should not be reinstated at this stage. Reporter sharapova says her doctor prescribed meldonium which she took on and off for 10 years. She has found unlikely support from pierce competitor serena williams. Axelrod Jonathan Vigliotti, thank you. Still ahead, a cliffhanger ending for homes too close to the edge. Axelrod a riot broke out last night in an alabama prison. Inmates recorded it as it was happening. This is the correctional facility in atmor, alabama. A guard and the warden were stabbed before it was over but theyre both expected to recover. A preemptive strike today in pacifica, california. These pictures were taken in january, showing an apartment complex on the verge of falling into the sea due to cliff erosion. Rather than let that happen, today, crews began taking the structures down with machinery, reasoning its just safer that way. A shocking act of sabotage at the iditarod. Axelrod that is musher allie zirkle after she and another competitor, jeff king, were repeatedly ambushed by a man on a snowmobile. Kings lead dog, nash, was killed. A number of other dogs were injured. A suspect has been arrested. Coming up, a growing problem that cities around the world are trying to wipe out. Axelrod we close tonight with a problem that has proven hard to i can suppose of. Contessa brewer now on the scourge of the flushable wipe. Reporter in san antonio, they cheered clearing the clog. In australia, a crane pulled out this fatberg, a glob of wipes, grease, and other items. The problem starts here when wipes go from the back of the toilet into it. And 7 of wipes are labeled flushable. New york city estimates it spends 3 million a year just dealing with wipes in the sewer system. Whenever you flush is going toned up somewhere. It doesnt just disappear. And the sewage passes through. Reporter deputy Environmental Protection commissioner Vincent Sapienza showed us the screening process, but it doesnt catch everything. Wipes are getting into our gear, clogging them up, and then were not able to process as much wastewater as we normally would. Reporter kimberlyclark, a manufacturer of flushable wipes, told cbs news, our flushable products are thoroughly tested to ensure that they meet the current u. S. Industry guidelines for flushability. The industry i. N. D. A. Has firm criteria. Wipes have to break down when flushed. But manufacturers compliance is voluntary. No laws regulate how flushable they are. President dave rousse blames nonflushable wipes for the clogs. There is absolutely no evidence presented by anyone at any time that a guidelinecompliant wipe flushed down a toilet has caused any damage or any issue anywhere. And its because they dont. Reporter but new york city is not alone. Tackling legislation now to regulate flushaway brands. Our preference is if youre going to use a wipe, thats fine. Put it in the trash. Reporter thats the bottom line. Contessa brewer, cb new york. Axelrod and thats the cbs evening news for tonight. Later on cbs, 48 hours. A reminder to set your clocks ahead one hour for Daylight Saving time, which begins at 2 00 a. M. Tomorrow morning. Im jim axelrod in