With all of the chaos of trying to figure out who is responsible for the tragedy in Boston on Monday, some on the left are proposing that it was a right-wing extremist who detonated two bombs during the Boston Marathon, killing three and wounded dozens.

With all of the guessing, Limbaugh asks why it couldn't instead be a left-wing follower of Bill Ayers or other known bombers.

"Why can't I pose the possibility? You got this guy, Bill Ayers, and his wife, Bernardine Dohrn, and they're out there teaching people, and they're ex-bombers," says Limbaugh.

Is there any evidence provided to point a finger either way?