When the officers who killed Tamir Rice, Eric Garner, John Crawford, Mike Brown, or Natasha McKenna never even go to trial for what they did, seeing an officer indicted and charged with manslaughter or murder feels a little like fitting a camel through the eye of a needle. Of the 1,200 people killed by American police in 2015, only seven cases resulted in charges — a ridiculously tiny number. Six other officers were charged this year for deaths that happened as far back as early 2013 — as police investigations into their own wrongdoing have a dubious way of dragging on not weeks or months, but years.