“it’s stuff like this that fortifies the perception that blacks are violent people to be avoided.”
Whenever blacks are present at a sufficiently large number, there is higher crime, bad education, lower property value, and flight of other races away. To avoid this simple truth is to put your head in the sand.
In highly developed urban areas, blacks live and others work. To keep the urban economy going, the society wishes that cops contain the plague. Unfortunately, cops are underpaid and undertrained, so they have to do their best with nothing in return. With systematic murders of cops, it is only going to get worse.
The true solution is to get blacks to LEAVE their ghettos and not bring their culture with them wherever they go. It is time for the blacks to shed their culture (which is simply a reaction to slavery/jimcrow). Time for a new culture of education and intellectual pursuits, not thuggish behavior, music, and athletics.
The place to start: start creating parents. It takes no brains to be a father or a mother, but it takes work to be a couple and raise your kids as parents. Also, politicians need to find programs that lift blacks out of poverty, not giving them free cell phones so they vote for you.