That's because left-wing politicians are still politicians. They want to remain politicians they don't want to end up getting arrested or lose their jobs, so they are only going to push back against this to the limit of which they think they can get away with, which basically means making statements, but otherwise not really doing anything.

If you want action you'll have to do it yourself. Unfortunately this does present a bit of a problem because you are then playing into the narrative that the Right have, that everyone who opposes them is a criminal. Because by definition you'll have to commit crimes in order to oppose them, since they will make opposing them a crime. Welcome to the wonderful circular logic of extremists.