Now we have people who are attacking police nationwide. There is a pattern forming here, and it doesn't look good. If the trend gets worse, will we have calls for a national police force? Think of how quickly the TSA was formed in response to 9/11.
Obama has been stirring emotions against the police since the Beer Summit, then the Zimmerman case, then Michael Brown, and on and on. Never let a crisis go to waste, especially if you are the one who caused it.