MSNBC's Witt On FBI Failure To Monitor Boston Bomber After Interview: 'Hindsight Is 20-20'

On her MSNBC show, Alex Witt, commenting on the decision of the FBI not to monitor Tamerlan Tzarnaev after having interviewed him in 2011, following up on inquiries from Russian intelligence regarding his possible radical Islamic ties, Alex Witt says "hindsight is 20-20."