Since he can't express his frustration and subsequent aggression towards the opposing team in a way that someone who can regulate their emotions would...
This inevitably comes up every time he is mentioned. Yes, he was very racist, even for the time. That mainly came forth from the fact that he was a very socially disturbed and scared person. Which isn't an excuse, nu i think we should be able to appreciate the amazing writing and the influence he has had on the literary (horror) landscape without just focusing on the fact that he was racist.
Jesus, the Knightscope K5 even looks like a Dalek.