It makes sense that trans people would be left-leaning because people who aren't left-leaning tend (painting with broad brushstrokes) to be opposed to equal treatment for trans people. Similarly, trans people can often be quite socially isolated because it's difficult for them to integrate into a transphobic society. In the US, there are 26 states where it's perfectly legal to fire someone simply for being trans.

Beyond that, I think you are quite off base in comparing trans people to online Communist and neo-Nazi radicals. You are probably looking at a much narrower slice of the trans population than you think you are. Assuming that you don't actually have some kind of anti-trans agenda, I'd rethink how you're expressing whatever point you're trying to make here.