Melissa Harris-Perry 01/17/16

Hillary Clinton sharpens criticism against Bernie Sanders

Presidential candidate Bernie Sanders is experiencing a surprising surge that is showing up in poll after poll in the early primary states of Iowa and New Hampshire. Symone Sanders from the Bernie Sanders Campaign, New York Magazine's Rebecca Traister, co-creator of #BlackLivesMatter Alicia Garza, MSNBC's Rev. Al Sharpton and The Nation's John Nichols join to discuss. ... more Duration: {{video.duration.momentjs}}