Well that's clearly _not_ an honest question, because it's a point you keep trying to push.
It's none of my concern, really, not being American, except that the same sort of disingenuous inability to distinguish correlation from causation also comes up here in the UK.
The obvious answer is that many of the factors that lead to high crime rates also lead to people voting for 'interventionist' (i.e. 'leftist') political parties. Those factors would include poverty, and a history of suffering discrimination, and more complex social problems. Also a big factor, and a less obviously political one, in crime rates is simply 'churn' - how transient a population is - something that tends to be much greater in big cities than in rural areas or small towns.
Don't know why I'm bothering to try and answer it as if it were an honest question, when it's very clear that it isn't.