As far as your quick research into the matter suggests, Bastion probably doesn't have the virulence and hatred one might find in members of the Freedom Congress, Empire 88, or other such groups. Rather, his is the more subdued bigotry of people who assign far more of a human's inclinations and abilities to ethnicity than is reasonable, unthinkingly treats those different as uniform members of their category rather than individuals, resents being required to be polite while decrying it as "political correctness", and assume that he they are "good guys" because there are people out there who are far worse.