We need to protect people from information and ideas we don't agree with.
Freedom of speech is not just about speech, its about ideas. Nobody should ever be deemed the arbiter of truth. Not Facebook, not the government, not anyone. Decentralize the social networks. Let everyone speak, even the bad people.
Realize that you actually make the problem worse by suppressing information, even bad information. Making information "forbidden" makes it that much more appealing to people, enhancing the us-vs-them tribal mentality. Especially when its a reasonable opinion or idea with some merit. Suddenly it sounds like suppression of the truth.