They have the power because states gave it to them. States can very easily take it back. But they won’t because they’re corrupted assholes.

Censorship is always the first step. Genocide is the last step. People getting mad when the first step toward fascism is crossed is a very good thing to fight fascism and try to prevent a future genocide. This is exactly what the poem is about : react on the first step, because it will be too late when the genocide starts.