I watched the original footage.
http://www.youtube.com/watch?v=9sEUIZsmTOE

And it looks like he was heckled by one of the people in the crowed and then he went off on one giving reference to the fact the guy was black. These things happen when comedians get heckled by the crowed. I think the only reason why this is on the news is because it was caught on camera and it allows the media to talk about something else other than the war.