I can use the Mel Gibson incident as the occasion to comment on the commonly held assumption that when one uses a racial epithet or gender-based slur in anger, it reflects ones' true attitudes; an innate racism or sexism.
I think that's not true. In anger, people often grasp at the most hurtful thing they can say. If I'm fit to kill George, I may call him a dirty whatever, not because I hate whatevers, but because, at least right now, I hate George and I know this will sting.
But I can't use the Mel Gibson incident as an example of that. He didn't know if the cops were Jewish (he had to ask), so I am afraid that, in this case, his tirade does reflect some type of latent anti-Semitism.
Gibson is by all accounts a religious man. He ought to recognize that this is a serious sin. He needs to get to a priest.