Racism (or what I would call racist bigotry, the most blatant kind of racism) is “predicted by a lack of interaction with people of other races”, according to Nate Silver’s TED Talk.
Most White Americans voted for John McCain, while most Asian Americans, Latin@ Americans, Black Americans, and Other Americans voted overwhelmingly for Barack Obama in the 2008 U.S. presidential election.
Some White Americans claim that Black Americans voted for Obama because he is black. That is, some White Americans think that non-white people have a “tribal” mentality and that they align with whoever looks the most like them. However, if we consider the fact that most White Americans voted for the white person, and that most Asian Americans, Latin@ Americans, Black Americans, and Other Americans voted for the black person, this hypothesis fails. A better explanation is that Barack Obama was the best presidential candidate, but most White Americans have a “tribal” mentality and aligned with the person who looks the most like them.