I got a militant christian email from a co-worker that said all americans opposed to prayer in school should shut up and sit down. Then it quoted some meaningless statistics. Then it made some logical errors, like that if you believe in God, then you believe in school prayer because people who believe in school prayer believe in God. It said that if you didn't agree, you were un-American and the usual kind of bullshit rhetoric that goes along with that stuff.
I replied to everyone who got the email, in the nicest way that I could, that I disagreed, was offended, and never wanted that sort of propaganda again. Of course, I couldn't help briefly mentioning a few of the reasons why I disagreed, like things the constitution says, but that was only to make myself feel better. It's important that people don't associate you with the crap sent to you by some idiot, but I think it's more important that people stand up to those kinds of pigs.