A belief or doctrine that inherent differences among the various human racial groups determine cultural or individual achievement, usually involving the idea that one's own race is superior and has the right to dominate others or that a particular racial group is inferior to the others.
You were asking what else we could do to stop racism here is my answer
Organize a vigil or protest. Protests and demonstrations are powerful ways to combat racism in your community. These can be coordinated in response to events that happen around you. For example, if someone puts racial graffiti on a building, you could get together with some people to paint over the graffiti.