CNN Erin Burnett OutFront August 4, 2015 23:51:00
Tonight police across the country are warning of a dangerous spike in synthetic marijuana use. this video we'll show you from new york city shows what ingesting this drug can do. the naked man you see there thinking he has super human strength. he punches through a fence as he tries to evade police. officials say there has been a rise not only in the use but also the overdoses of synthetic marijuana and a spike in violent crime linked to the drug. evan perez is "outfront" tonight. that's amazing and pretty shocking to say the least. why are police raising the alarm about this? >> well there's ...