Surely this is irrelevant? It isn't who said something that's important, it's what was said.
"Puppies are cute" would get some agreement, regardless of who said it. "Gas all the jews" should get universal disdain, and it doesn't matter whether Hitler said it or Mother Theresa.
Mind you, I'm pretty sure there are posters on here that are more than willing to agree with the second point as well.