Niggers are a net drain on any system. Structure the tax/funding for metro to share the misery with the entire community and be done with it. It's not worth collecting a fare from a nigger if it results in someone getting shot.
And here lies society's very problem: jews importing niggers.
I have zero doubt that all countries would be much better off and much more tranquil if jews weren't here. Just eliminating their treasonous act of importing dangerous illegals would be enough. But we also have their dangerous fiat currencies to contend with.
I think back to China's Great wall: there was a Great reason for that.