Libertarian, most definitely.
And what exactly are you basing this on? When have the Libertarians ever called for discrimination against any race?
They side with neo-Nazis and skinheads all the time. When your main ideal is personal freedom, you have to allow freedom of such things as racism, homophobia, and bigotry in general.
The notion that we actually side with those bigots is ridiculous considering their support for personal freedom is nothing more than a facade. Neo-nazis and skinsheads don't just support allowing such things, they support institutionalizing it. Further, when it comes down to it they don't actually support personal freedom, they support what's convenient to their bigotry. As soon as they would attain power they would actively work to forbid any contrary thoughts being expressed. Libertarians on the other hand actually support personal freedom, which means they would not institutionalize such bigotry and they certainly would not go around policing people's thoughts.