Boston Bomber's Friend - 'Executed' By FBI? (VIDEO)

"The father of a Chechen man shot dead while being interviewed by the FBI in Florida last week over his connection to one of the Boston bombing suspects has accused US agents of killing his son "execution-style".*

Ibragim Todashev, who was being questioned for his friendship with Tamerlan Tsarnaev, was killed by FBI agents after lunging at them with a knife-- but is that really what happened? Conflicting stories are coming out now, throwing that story into question. How and why was Todashev killed? cenk Uygur breaks it down.