You are winding us up again. We already see and are seeing what they do when the population get too truculent.
They set up special courts and use the police surveillance powers to identify and lock up people who go too far. I've no problem with them locking up rioters and people who burn cars and run amok in the streets. We've seen it all before many times. Inciting violence has long been illegal, but I have my doubts about more modern suppression laws and even more so, some that we might see soon. Some in Labour have been talking about 'Islamaphobia' and 'blasphemy'. I thought the blasphemy laws had been got rid of, but we may yet see more of that kind of nonsense. Scotland has been leading the way with their special take on hate crimes. The police need to stay away from free speech where there is no threat or incitement to violence. Expressing opinions about lifestyle, religion, or politics needs to be protected not suppressed.
We have a long history of the state coming down hard on the lower orders getting rebellious. They used to send in the cavalry with sabres. Now they have other methods, but I think some of your suggestions are a bit wide of the mark.