People do not learn, people forget to easy, and people do not like to see nor hear any truth other than what they want to remember. Nothing was learned from the Rodney King, (March 3, 1991), incident, Nothing was learned from the Ferguson incident, (August 10, 2014), and nothing is likely to be learned from this incident, (May 25, 2020). Nothing has changed. The majority of the cities that have seen violent outburst are primarily run by democrats or have democrats as the mayor. Most police chiefs are hired with approval of the current city administration. Most police policy is approved by the cities politicians. Most of the political people in charge are elected by the people of that city. Nothing has changed, nothing will change, people do not want to change, it would upset their apple cart.

I am not sure how police chief selections work in towns other than the few I lived in and had a care to learn how they were picked, and it was the current city politicians that decided.