I am all for reforming the US social safety net and criminal justice system, but I think you need to understand what we deal with. We have, for one reason or another, very dangerous areas of our nation and they are filled with weapons and hopeless people willing to use them. I don't think the problem we face has an easy solution. I think it helps to try to empathize with the situation black people in America face on a daily basis. Then it helps to empathize with the situation first responders have to deal with on a daily basis.
Here is a rather disturbing video which led to a firefighter and a civilian losing their life:
https://www.youtube.com/watch?time_continue=4&v=fR6lMfMx4O8&...
it helped me understand the issue is not so simple.