"To Each Their Own": Does it give bigots a pass?

[Igel]

15. And that's the problem.

There's enough research around to show that just saying nasty things about some students' ethnic group is enough to lower test scores and reduce performance in the classroom.

It only happens with some ethnic groups. Not with others. African-Americans, most notably. If there's a killing of a teen member of those groups in the same city it affects their school performance for a week--it doesn't matter who the gunman was.

It doesn't much matter what their personal backgrounds. It almost seems like a cultural insecurity that continues even after most of the basis for it has passed.