I think it's ok to take ideas and information as being somewhat independent from their creators. Bad people can produce good ideas, just as good people can produce bad ideas. I might feel very uncomfortable with Shockley's views on genetics and reproduction, but I'm happy he co-invented the transistor. Similarly, I can read Reagan's letter and get something out of it without needing to consider his acting or political career.

That Carlin clip is great. Hard to believe it's all still about business-crime and the uterus.