Whatever facts are yet to be learned regarding officer Michael Slager's confrontation with Walter Scott, there is nothing that can justify what that cellphone video showed.  A fairly balanced description of the incident was reported by Doug Mataconis in yesterday's Christian Science Monitor.  From what we know right now, the uninjured 33-year-old officer emptied his service weapon into the back of the unarmed 50-year-old man trying to run away.   We don't know if Scott was killed because he was black.  We don't know much about what happened before the shooting.  While this information may determine the degree of homicide at trial, murder or manslaughter, it does not change the fact that it was clearly a criminal homicide.  Would Officer Slager have gotten away with this killing if someone had not caught it on video, as many in the media are suggesting?  I don't think so. Unlike Michael Brown, the bullets are in Walter Scott's back and, despite what Al Sharpton says, we are not living in the 1950s.  Like the Michael Brown case, where there was no video, the investigation into this shooting will utilize forensics, the testimony of other officers who arrived at the scene, and perhaps other witnesses, to build the case against Slager's version of the facts.  Michael Slager will go down for this killing.  But because his crime feeds the narrative that all cops are racists, he has also brought down every one of his fellow officers across this country.