If you look at their use of force policies, it's clear the different treatment of the killers in Mpls vs NYC is a matter or will or fear of the police union. 
The most effective way to deter police violence is effective Use of Force policies. They have often been written to protect the police rather than the public. For example, at one time Portland's use of force policy did not even require a fear for one's life to be reasonable.
So a cop who killed a fleeing suspect said he feared for his life and got away with murder. Consider supporting the Use of Force Project - amplifying its message, send letters to your local police suggesting a use of force review
useofforceproject.org
useofforceproject.org
