The other members of the audience paid money to see Michael Richards. Whatever went on before he yelled "Shut up" must have annoyed them because on the video they laugh at his upside down with a fork remark.

McGrath, we can exchage views for a thousand posts but neither one of us is going to change our mind. I have been in comedy clubs and seen some ugly scenes in response to hecklers.

No one is saying what exactly triggered Richards response.