First, you allow information to flow freely. Then you control it. Trying to impede or fight anything is inefficient. This is why we are allowed to talk freely. Free speech is not actually about freedom, it is about control.
Discussion
Spot on, mate. The key is to make it socially unacceptable to talk about certain topics. This can be accomplished by disappearing people, but a much cheaper and more effective tactic is to use ridicule. Pretend to be in the same group as them, and show that support many of the same causes. Tell them how inappropriate and misguided their comments are. Call them names if need be. Most important, use just enough accounts so you get innocent bystandards to pile on. Then you can delete the original comments and totate accounts.
This is how we win. And by "we" I sure as fuck don't mean you, anon