Police are drastically more likely to be killed by black males than any other demographic. IIRC the stats are similar to the 21 times more likely number so basically it goes both ways.
13% (Black) of the population commit over 50% of all murders.
If the stats are adjusted based on the number of encounters police have with Blacks vs Others, the stats no longer look biased. In other words the kill rate per 1 million encounters is similar regardless of race.
Black Police Officers kill Black people at 3x the rate of White Officers.
All un-justified killings by Police need to stop. Having said that, the kill rate for people that didn't have a weapon and didn't resist arrest is very low.
It's not just a Black issue. Low income people of other races commit more crimes and get killed by Police more often than higher income people.