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Ifill the search for answers in orlando is taking authorities down new avenues tonight. Emerging accounts today raised more questions about the man who killed 49 people before Police Killed him. William brangham reports from orlando. When you saw his picture, what went through your mind when you saw his picture . We just went, oh, yeah, that makes sense. There, thats omar. Reporter its a new wrinkle into the investigation of omar mateen. Some of the patrons are now saying mateen was a frequent he used to come in the bar about, on the weekends. Sometimes he would be there. Sometimes he would miss a couple of weeks and then be in again. He was a regular. Brangham this afternoon, the nightclubs owner said through a spokeswoman that the reports are untrue and totally ridiculous. But the Associated Press reported the f. B. I. Is investigating those claims, as well as whether mateen may have used a dating app for gay men, the last contact was about three months ago and as soon as i saw the picture on the news i quickly noticed the persons face. Brangham these allegations come as something of a departure from what was previously said about the attacker. Mateens father has said he became upset months ago after seeing two men kissing, but otherwise, never seemed homophobic. Investigators are also talking to the gunmans wife. Nbc news reports she told federal agents that she tried to talk her husband out of carrying out the attack. She also said she was with him when he bought ammunition and a holster, and once drove him to the club because he wanted to scope it out. Meanwhile, some of those who escaped with their lives, spoke today at orlando medical center. I hear him and hes shooting everyone thats already dead on the floor making sure theyre dead. Shotguns closer and i look over and he shoots the girl next to me. And im just there laying down thinking im next im dead. Brangham angel colon was shot several times. Fighting back tears, he described his rescue by police. I dont feel pain but i just feel all this blood on me from myself from other people and he just drops me off across the street and theres just bodies everywhere. Were all in pain. Brangham all this, as the f. B. I. Continues to scour the scene of the shooting. Lines of agents and officers worked through the clubs grounds this morning, laying down markers and identifying potential clues. As the investigation here in orlando enters its third day, theres been a flurry of activity today in washington. Both president obama and members of the u. S. House were briefed by Top National Security officials. Today, he called again for cracking down on assaultstyle weapons, and barring those on a terror watch list from buying guns. Otherwise, despite extraordinary efforts across our government, by local law enforcement, by our intelligence agencies, by our military despite all the sacrifices that folks make, these kinds of events are going to keep on happening. Brangham after the session with the president , f. B. I. Director james comey also briefed members of the house on the investigation, behind closed doors. And around the country, thousands of americans are responding in their own ways, with tributes and vigils in a number of cities last night. In new york, supporters gathered in front of the historic stonewall inn, where the modern Gay Rights Movement began. And back in orlando, thousands met in the citys downtown. There they lit candles and read aloud the names of the 49 killed. Dew sizemore, who lost six of his friends to the shooting, said the ceremonies gave him a small sliver of comfort. That i can leave here and start to heal. Its the beginning. The beginning of a long road ahead of us, but hopefully tonight will help a lot of people. It helped me. Brangham the president is planning on coming to orlando thursday, where hell likely meet with survivors and family members. For pbs newshour in orlando, im william brangham. Ifill in the days other news, president obama rebuked donald trump for his renewed call to ban muslim immigrants. In a sharply worded speech, the president dismissed such appeals as not the america we want. The republican nomineetobe fired back in an email to reporters, saying of the president he continues to prioritize our enemy over our allies, and for that matter, the american people. Well listen to some of the president s speech, after the news summary. Woodruff donald trump took a new broadside from his presumptive november opponent, as well. In pittsburgh, Hillary Clinton accused him of falsely claiming shed curb gun rights or let in a flood of new refugees. These are demonstrably lies. But he feels compelled to tell them because he has to distract us from the fact that he has nothing substantive to say for himself. Woodruff the Republican National chair, reince priebus, defended trump against both the president and Hillary Clinton. He said their policies would not prevent terror attacks, but instead, take away americans gun rights. But the top elected republican, House Speaker paul ryan, put some distance between himself and trump, on the issue of keeping muslims out. I do not think a muslim ban is in our countrys interest. I do not think it is reflective of our principles not just as a party, but as a country. And i think the smarter way to go in all respects is to have a security test and not a religious test. Woodruff all of this came as donald trump turned 70 years old today. If elected, hell be the oldest person to assume the office of the presidency. Ifill in france, police carried out a series of raids after an attacker killed two Police Officials overnight at their home outside paris. The killer, larossi abballa, claimed allegiance to the islamic state. He was shot dead by police after a threehour standoff. A prosecutor said abballa had a list of other targets, including Public Officials and journalists. Woodruff French Police also detained 43 russian soccer fans, suspected of attacking english supporters, at the euro 2016 soccer tournament. Reinforcements deployed across northern france, ahead of upcoming matches. And, the European Soccer Federation warned russia faces expulsion, if theres more violence. We have reaffirmed our desire to work directly with the security forces, with the Police Forces here in france to make sure the security and safety of all participants is of the utmost priority. Woodruff adding to the trouble labor protests in paris once again turned violent as demonstrators battled police. 20 officers and six protesters were injured. Ifill back in this country, the senate defied a president ial veto threat and overwhelmingly passed a defense policy bill. It authorizes 602 billion in military spending, but it also bars the Guantanamo Bay prison from closing, and it blocks any new base closings. Similar provisions are also contained in a house bill, but the white house has warned the president will not accept them. Woodruff wall street fell for a fourth day over worries about Interest Rates and britains vote on the european union. The Dow Jones Industrial average lost 57 points to close near 17,675. The nasdaq gave up five points, and the s p 500 slipped three. Still to come on the newshour new efforts to counter violent extremism before an attack. A look at the gun used in the orlando and San Bernardino shootings. Russian hackers steal Democrats Research on donald trump, and much more. Ifill how much do words matter . Donald trump has regularly criticized president obama and Hillary Clinton for not using the term radical islam to define the threat of terrorism. But mr. Obama, in extensive remarks delivered at the treasury department, struck back today, saying the Presumptive Republican nominees plan to ban muslims from the u. S. , and the language he uses to make his point, is dangerous. There is no magic to the phrase radical islam. Its a political talking point. Its in the a strategy. And the reason i am careful about how i describe this threat has nothing to do with Political Correctness and everything to do with actually defeating extremism. Groups like isil and al qaeda want to make this war a war between islam and america or between islam and the west. And if we fall into the trap of painting all muslims with a entered brush and imply that we are at war with an entire religion, then we are doing the terrorists work for them. But we are now seeing how dangerous this kind of mindset and this kind of thinking can be. Were starting to see where this kind of rhetoric and loose talk and sloppiness about who exactly were fighting, where this can lead us. We now have proposals from the Presumptive Republican nominee for president of the United States to bar all muslims from immigrating to america. We hear language that singles out immigrants and suggests entire religious communities are complicit in violence. Where does this stop . The orlando killer, one of the San Bernardino killers, the fort hood killer, they were all u. S. Citizens. Are we going the start treating all muslimamericans differently are we going to start subjecting them to special surveillance . Are we going to start discriminating them because of their faith . Weve heard these suggestions during the course of this campaign. Do republican officials actually agree with this . Weve gone through moments in our history before when we acted out of fear, and we came to regret it. Weve seen our government mistreat our fellow citizens, and it has been a shameful part of our history. This is a country founded on basic freedoms, including freedom of religion. We dont have religious tests here. Our founders, our constitution, our bill of rights are clear about that. And if we ever abandon those values, we would not only make it a lot easier to radicalize people here and around the world, but we would have betrayed the very things we are trying to protect, the pluralism and the openness, the rule of law, our civil liberties, the very things that make this country great, the very things that make us exceptional. And then the terrorists would have won. And we cannot let that happen. I will not let that happen. Woodruff that was president obama speaking today. Woodruff omar mateen didnt come to the u. S. From another country to carry out the attack in orlando, he was born and raised here. Authorities suspect he was radicalized, and then turned to unimaginable violence. Stopping radicalization here in america is a National Security priority of the obama administration; newshour producer p. J. Tobia has the story of one part of that effort. America, you claim to have the greatest army ever assembled. Reporter this is a call to arms by the socalled islamic state, aimed squarely at young, disillusioned american muslims. Liars, fornicators and for the freedoms of sodomites. Reporter this is the the u. S. Governments digital counterpoint to isis call for recruits its the f. B. I. s dont be a puppet website. An online roleplaying exercise. In a choose your own adventure experience, users walk through the steps of extremism, and the evolution into a violent radical. When a rock comes through your window and youre eating supper, youd better have a plan. Reporter and this is the governments offline strategy. A program where the elderly, like this 89year old japanese american woman, share their own stories of discrimination with muslim teens, hoping to prevent their anger from festering into violence. This business of becoming terribly bitter and unkind to others is not the way out. There are some people here who have been through some pretty messy things. Reporter it is all part of the obama administrations efforts of countering violent extremism or c. V. E. Opponents argue its a way for the government to spy on muslims. Advocates say its a way for american muslims, to work with law enforcement. Identifying and preventing radicalization before attacks happen. Mehreen farooq runs a federally funded c. V. E. Initiative in Montgomery County maryland. Its the program that pairs muslim teens with the elderly so what that means is that we have brought together various members of the Community Different n. G. O. s different Faith Community leaders, educators, Counter Terrorism experts, gang prevention expertsbrought everybody together to understand what are the resources we have here in we do to build Community Resilience and to prevent violent extremism. Reporter one issue has been getting young men to participate but there are strategies for reaching them as well. Theyre genuinely good kids and everything, but they may be a little lost in life. Reporter this man is a member of a large Muslim Community in the midatlantic region. Well call him mohammed weve concealed his identity and altered his voice. Mohammed isnt part of any government program, but he seeks out young muslim men, usually in their early to midtwenties, who have explored the dark message of islamic extremism. My goal is to take them away from that and let them know that thats just a bunch of fantasy reporter teens who think the deck is stacked against them, are an easy target. Well they really just want to have sex but the only way to have sex is to be married; and the only way to get married is to have a career. And the only way to have a career is to go to college or go get some kind of a skill. And thats for them, it looks like an awfullytall mountain to climb. Reporter isis propaganda on the other hand, offers Immediate Gratification through jihad. You need to be coming over to syira, or somalia. Theres free sex slaves and wives and utopia. That resonates with them because now they see a path to having a proper family. Reporter mohammad introduces these young men to male role models in the Muslim Community. This is south asian food for south asian households. Reporter rizwan jaka argues for working closely with the government. Hes the board president at the all Dulles Area Muslim Society in suburban virginia. The society doesnt receive federal cve funds, but partner with the local f. B. I. Field office and department of Homeland Security. It also sponsors boy and girl scout programs. If you see someone that is going to do harm to our country or you hear about itwe absolutely must tell law enforcement. That is our islamic duty and reporter secretary of Homeland Security jeh johnson visited the societys mosque twice last year. This year the organization received a Community Leadership award from the f. B. I. Last night, members took part in an interfaith vigil for those killed in the orlando attacks. We bring the fbi here for townhall meetings and speaking to the community for various townhall services; and mutual reporter parents have brought troubled youth, who have broken no laws but shown an interest in ideology of the islamic state. To the societys imam, mohamed majid. Imam majid actually talks with them and challenges them especially when they ask about isis because theres this twisted idealism that people have of isisthese few individuals and he challenges them. Imam majid says look, where does it say in the koran that you can burn someone alive . Reporter the push for c. V. E. Comes straight from the top. In 2011, president obama released his first c. V. E. Strategy. Last year, the white house hosted an International Summit with representatives from more than 100 nations and dozens of american muslim groups. The department of Homeland Securitys c. V. E. Task force provides oversight for the entire governments strategy in this area. The president is asking for more than 96 million for these programs in 2017. This is as critical as any other Homeland Security mission that we have going right now. Reporter secretary johnson has spoken widely about the role of americas muslims in stopping terrorist attacks. Newshour coanchor Judy Woodruff discussed it with him last week. The global terrorist threat has evolved to include, not just terrorist directed attacks, but terrorist inspired attacks by homegrown, homeborn violent extremists. In this environment its critical that we commit ourselves to c. V. E. Reporter secretary johnson describes the initiatives as a way to connect with minority communities. To build bridges, send the message that, ilet us help you in your efforts to counter violent extremism in your community. If you see someone going in the wrong direction. Reporter some argue the approach is too soft, ignoring what they see as the real problem islamic terrorism. Meanwhile, some muslim groups and civil libertarians say the c. V. E. Program turns teachers