MSNBC Live with Alex Witt 01/18/15

Police grapple with stopping homegrown terror

Fmr. Assistant Special Agent-in-Charge of FBI-NYPD Joint Terrorism Task Force Don Borelli tells Alex Witt what law enforcement need to do in order to combat the emerging threat of homegrown terrorism in the wake of major anti-terrorism raids across Europe ... more Duration: {{video.duration.momentjs}}