The killing of Amir Locke in a no-knock police raid last week in downtown Minneapolis was a tragedy, but it was also an abject abuse of police power. New details are still coming to light, but no new information will change the plain fact that a SWAT team should never have barged in on the 22-year-old Locke, who was asleep, and then shot him dead when he understandably reached for his legally owned handgun.