Are the solutions attainable? AFAICT most of the violence is coming from the police, and they are emboldened by the complete lack of consequences for use of force.

I think you could argue that the cause of violence is the massive imbalance in power between the people involved. Ideally the risk of actual consequence might dissuade police from acting thoughtlessly.

Edit: specifically referring to the violence at protests, not broader violence issues. It’s worth remembering that Americans have a first amendment right to protest peacefully.