Being rude also doesn't work as a method of political change? It doesn't, and in addition you alienate people who thing being civilised is a good thing.

Politicians are already one of the most reviled groups around, and that doesn't discourage them.

Stage effective, organised opposition that will actually threaten their plushy careers, then they'll listen.

There's nothing civilized about being polite to people that are actively undermining our rights.

Politeness is reserved for society, not for antisocial personalities.