Don't worry at the rate the Police are making it easy to label them trigger happy and racist, people will be clamoring for new robotic "non racist" "non trigger" happy Police before long... it's called the Hegelian dialectic.
Killer Robot used to stop Dallas Shooting supposedly: http://www.cnn.com/2016/07/12/us/dallas-police-robot-c4-explosives/
Where this is and has been heading for years: