The problem is not just that the people deciding what gets edited/blocked could, at some point in the future, be Nazis or Stalinists or whatever - bad people censoring the good to make their propaganda be the only thing that's heard. That's bad, but the real problem is this: You can be wrong. You can be wrong when you're absolutely sure that you're right, and you can be wrong on things that really matter. Be very careful about blocking "wrong" viewpoints, because you can be wrong about what's "wrong".

Note well: I am not at all saying that Trump supporters are right. I am saying that you are not omniscient enough to be qualified to decide what should be blocked. Nobody is.