Violence being the language folks use after all else fails.
Starting with violence means you don't really care about solving the problem and just want the incident to go away
There is 0% chance that all police departments will all change in 2020. I'm happy to voice my support that some cities are willing to try new things. If it works great. If not, back to the drawing board.
At what point will you be convinced that you need to start over? Because removing corruption is like removing an invasive species: you don't solve it by taking a half-assed attempt with trimming and call it a day.