i have to say if the guys in the audience were continually harrasing him while he was trying to perform he got rightfully pissed off.
did he have to use the one word that black people instanly call racism on anytime a white person uses it...maybe not
but if someone came to my job, sat down, and proceeded to berate me with heckling why id get pretty pissed off as well and might let words fly that arent exactly socially acceptable or politically correct.
the fact that he is or was a celebrity at a point in time is why this is so hyped.