Hiking and basic wilderness knowledge.
I live in the Mojave Desert. Simple stuff like knowing not to cut through bushes, wearing proper shoes, avoiding feral dogs, and always having something to defend yourself with when walking in the desert aren't common among a lot of people who aren't originally from here.
Working backwards, we could reasonably expect Italian, Irish, and Polish people. Discrimination really isn't about the color of your skin if history is anything to go off of.