this hasnt been the only time he's had outbursts like this hellmouth.
Because his Bipolar so no I doubt very much it is the only time. Real hard core racism the kind that comes from pure hate I'm right with you, the subtle kind that is not so obvious again right with you. Silly outbursts designed to shock or get to an individual, not a smart thing to do, but not quite the same.
A bipolar episode again the man needs help and understanding. You don't push or antagonize someone who is bipolar. Even good news can set them off.
I dislike most of his films Braveheart was a load of nonsense and that other piece of rubbish he did about the revolutionary war was even worse. The Passion should have stayed in the middle ages where it belongs.
But attacking someone with server mental health problems says more about the person doing the attack than the person coming under fire.
And I also laughed at the Southpark episode I'm not a PC loony, but they have a go at everything, but to start apply the same expectation of self control to someone who is not able, through no fault of their own to have that kind of control is pretty low.
Its funny all those who gut react "OMG his a razzist" are more prejudice then the guy they are attacking.