It's still censorship. So we agree there are acceptable grounds for censorship. Harming others is one of them. The thing is, "harm" is pretty broad concept. Doxing may harm someone by getting them in legal trouble. But what about verbally abusing them? What about spreading lies to ruin their reputation? What about publishing racist ideas that alter people's behavior to whole groups of people? What about trolls who destroy a thriving online community? Of course, the only acceptable definitions of harm are the ones you personally believe, and if others think other things are harmful they are wrong.