I don’t wear a pin, but agree with you, Clay. If the symbolism of the pin prevents just one incident or tragedy, it has made a positive difference and done its job. Also, it gives a sense of empowerment to the bystander. Often, they feel powerless because they want to help, but are afraid the racist, mysoginist, homophobic bully will turn on them next. With a symbolic gesture, they can register their vehement disagreement without getting into a heavy confrontation. For me, it’s better than them being complacent and unwilling to make any stand at all..
My experience teaching my Anti-Bullying Class for the past 5 years tells me there are many bystander-types who want to help, but feel frightened to engage directly. I hope people can be more accepting of the pins as a legit form of symbolizing support.