I doubt that Dr. Marrus is truly racist. I suspect he is like many older people - a little bit racist, but not in a truly malevolent way. He just sees race far more than younger people would and is more uncomfortable with people who are not white like him. But I do not think he should be hung out to dry because of one mistake. That being said, his history of writing about the Holocaust is hardly evidence that he is not a racist nor that he has spent his life fighting for human rights. I suspect both of these are true, but the evidence of his scholarship is hardly conclusive. Look at how bigoted B'nai Brith is, despite its past reputation as a defender of human rights.