Someone mentioned posting signs for religious groups: Sometimes I post things that come off (apparently) as controversial, so please know I mean this in a humorous and un-provoking way:
When "certain" religious groups (well, ANY religious groups actually) knock at my door and request to come in and share all their truth as they know it about X religion, I like to say this:
"Absolutely, I am totally open to hearing all about your beliefs and your religion. Come on in, and when you're finished, I will tell you all about Buddhism and what it means to me!". So far NO ONE has ever come in.
I don't think it's anything against Buddhism, I just think they have it in their mind to share their point of view and they are not prepared to listen to another point of view, period. They always leave right away.
Both funny and sad that the concept of sharing both points of view drives them away, lol!