Actually, it does work. I was working in a similar group (locally and much smaller) for some time. You can reach everyone with clever and impressive actions for a simple reason: they are impressive and resonate so much that even the "enemy" has to admit that they were impressed. You won't turn anyone, but you make sure that they know someone to turn to once they do. Its an offer to talk.

Considering that exiting the right-wing circle often involves ditching most of your friends, someone to talk is the most important asset "on the other side".