I think that we have a responsibility to speak out on matters we believe in and ignore negative pushback.
The alternative is that anyone can shut down a viewpoint by simply flooding the opposite side. You don't know whether a poster is a troll, a real person that's simply misguided, or a real person that posts in good faith.
You don't even end up with what's merely emotionally satisfying - that would be bad enough - but with the set of events or opinion that wins out purely based on competition.