All In with Chris Hayes 04/13/13

click3: Steve Kornacki ‘has a friend in’ Carole King

Newsbound offers a new report and interactive feature on the NFL and brain injuries; Rep. Steve Stockman tweets out his latest campaign bumper sticker, "If babies had guns, they wouldn't be aborted”; and "UP with Steve Kornacki" premieres this weekend, ... more Duration: {{video.duration.momentjs}}