MSNBC Live with Tamron Hall 12/15/15

Former LA Mayor: Threats against school transpired over time

Los Angeles Unified School District, which is the second largest school district in the country, closed all public schools and sent nearly 640,000 students home following a bomb threat. Former Los Angeles Mayor Antonio Villaraigosa joins Tamron Hall to talk about the district’s response on MSNBC. ... more Duration: {{video.duration.momentjs}}