Personally, I like the “coexist” stickers. It shows us clearly who the mentally deficient are among us and thus are easier to avoid on the road.
I see “COEXIST” stickers around the town in which I have my business. Most people there are affluent, and thus not likely to be mentally deficient (e.g., low IQ, schizophrenic, etc.)
However, having such a sticker identifies one as being brainwashed, as well as being literally spiritually blind. One “faith” is NOT as good as another!!!! And neither islam nor militant atheism is willing to coexist with, for example, Orthodox Christianity.