The Twits spewed their hatred from a stage overseas - not in the presence of less than a handful of people. They spoke against our president on foreign soil while we were at war and they have not only not apologized for their poor judgment - they continue to defend their actions and have released a new record proclaiming they are unrepentant.
No one is perfect, and while Gibson's words were hateful, he said them while intoxicated and has apologized from them. I don't think a boycott is warranted because he admitted he was wrong and it is laughable that Hollywood would be upset over his remarks when they are mostly pro-terrorists and anti-Semites as a whole. How hypocritical.
A boycott is a personal thing. You may not think a boycott is in order, but I do. And a celebrity blaming the ills of the world on Jews, a line that will be published around the world, to me, is just as bad if not worse than what the Dixie Chicks did. Unless you're Jewish, there's no way you can understand that.