Well, killing a race, religion, or group is considered genocide, so the person who coordinates this is called a genocidal.
I person hired to kill or murder someone is called an asasson :)
No the worst you can do is knock someone out or run them over with you race kart.
The rider is called a jockey.
That is called Manslaughter. Which means to kill someone by accident.
Homicidal
It is called a 360 nothing else to it.
you use a gun, because she is annoying :)
You lap someone in a Nascar race.
To kill anyone against or not part of the master race- Germans. He killed Jews because he thought they were in the way of making Germans the master race because they weren't what Germans were.
Its called a Lakitu. It throws spikes in Mario games to kill Mario. In this game its just the race manager.
Someone who is racist, whether it be towards their own race or any other is a racist or has a prejudice towards their own race. In Psychology, this kind of racism is called Internalized Racism.
Such a person is called a 'misanthrope' (Gk. 'misanthropos'; from 'misein', to hate, and 'anthropos', man").