this is why we need better training, but to pretend such a hypothetical situation is systemic in policing is simply wrong, they're unfortunate accidents that don't occur regularly.
there were what, 963 fatal shootings in 2016? most of these are actually justified shootings, but let's assume ALL 963 shootings are unjustified police acts of violence
there are approximately 1,100,000 police in the united states. over 365 days a year...
this means there are about 2.6 shootings a day in a country whose population is 323,100,000
these shootings are perpetrated by .0875% of the entire police population
in 2015 there were 15,696 murders, 90,185 rapes and 327,375 robberies (robbery charges imply threat of force used)
by comparison, police shootings are not a significant problem in America, when compared to the .13% rate of these violent crimes (excluding other specific crimes) perpetrated in America yearly.
the police force is not more violent than the general populous, they are about 34% LESS violent, and that's a HIGH end estimate, not taking into account all other various violent crimes the public perpetrates.
Do we need reform in our police department? Yes, there is always room to improve. Is this the number 1 crime problem facing our nation? no, it is not