No one can speak up, your identity is not the reason for backlash, people use identity as the first attack vector or reason to dismiss an opinion that they don't like.

Social media is broken - having a fight on the street has real world consequences, having a fight online has none. Many people use fighting online to a proxy to assert their status they can't achieve in the real world.

That being said, Free speech and other base rights like privacy, association are activity being reduced in most countries. Take free speech for example once you remove actually hateful people you encounter less of those people, so the extreme things you do see become the new vile, and so on until no one can speak without being labeled some proxy for a reason you should not listen to them.

While I have no idea what kiwifarm or whatever is, blocking those already loney people is just going to make them express themselves through violence.

Book burning is now commonly practised, the books of today just look different. They are videos hosted online.