Yup, those are more problems we have with police. Not only do they have lower standards for use of force than soldiers do, they also have less accountability. It's easier for a cop to get away with killing a US citizen than it is for a soldier to get away with killing an enemy combatant.
It used to be if they shot someone they were screwed if they didn't find a weapon to back up their "fear". Now it's just however they feel in the moment, whether it has any basis in reality or not. Like:
Officer: I feared for my life.
Investigator: Uh, you killed a seven year old girl asleep on a couch.
Officer: Yeah, uh, there was a lot of smoke from the flash bang.
Investigator: Well, alright then, I'm completely satisfied with this report. You sir, are an American hero. Consider the charges dropped!
Unfortunately, I didn't make up that exchange. True story.
http://www.huffingtonpost.com/2014/09/17/aiyana-stanley-jones-joseph-weekley-trial_n_5824684.html