In other online communities, like facebook, I mostly ignore people who bother me. On occasion, I will respond to certain things that are just false, and will usually just post the actual facts and a link or cite to the actual facts.
Here, for a while, I tried actually responding to some people who were triggering me, trying to explain WHY others see their behavior as troublesome or whatever. I am trying really hard to stop myself from doing that, with intermittent success.