Further, since we are imprisoning a lot more people, looks like private violence has increased, supposing, as seems likely, most of them are being reasonably imprisoned.

This doesn't follow, unless by 'violence has increased' you mean that there are more incidents of violence. But this would be consistant with violence being extremely rare. So are we imprisoning people for violent crimes and at a higher rate?

I have the same questions about your claims of increased state violence. Has the rate of state violence gone up, or just the number of incidents? It's the former we're interested in.