Your induction into the tribes would be at the tribes' discretion just like it was Canada's discretion to let you in from Germany. Calling out "racism" for people just trying to protect what little they have left is the peak of absurdity.

I'm not sure what outrageous situation you're imagining but you're not going to walk into the park and be apprehended by a bunch of dudes in a loincloth who hold a skin color picker chart up to you and say "he's too pink, throw him in the Wigwam to await questioning."