It doesn't matter if it's in the US or Rawanda.   The fact is still the same.  Furthermore, there is no evidence that backs up your claim.  impunity=exemption from punishment.  Police officers that shot civilians are tried like any other citizen.   Data also shows police violence against black men is actually rare.   The current narrative stating otherwise is false, simply to promote an agenda.  the real crime is the perpetual poverty facing blacks.   27% of the US is black, 13% live in poverty.  That is what should be addressed, not taking cops and turning them into scapegoats.

https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0ahUKEwjsl9TVi83WAhVCzWMKHcTbCWYQFggtMAE&url=http%3A%2F%2Fwww.nationalreview.com%2Farticle%2F451466%2Fpolice-violence-against-black-men-rare-heres-what-data-actually-say&usg=AOvVaw3TAtO9F_LsNoonqU0WKs6P