Race for sure played a part in this although I think the robber could have been shot either way........
How we react to crime is usually different. Generally speaking whites aren't around as much violence, the fear level is extremely high when they are potential victims.
In this case no way was he going to execute 20+people, it was obvious he was there for the money right from the start.
I slip him my wallet right away, carry cash in my front pocket with a rubber band, and continue eating my hash browns.
Of course the robber was 100% wrong in this but it's also true ultimately the only danger here for patrons came from the guy that was doing the shooting.
Not saying, just saying.