MSNBC Live with Thomas Roberts 05/18/15

How prevalent are biker gangs in the U.S.?

Msnbc’s Richard Lui takes a deep dive into the demographics behind various sets of biker gangs in the U.S. Plus, former undercover ATF agent Jay Dobyns highlights two of the gangs involved in Sunday’s brawl, and their level of influence. ... more Duration: {{video.duration.momentjs}}