Detroit

[Lemur]

The birther bit is easy to explain. [...] The rumor started and no evidence was immediately published giving the appearance of something wrong.

100% incorrect. State of Hawaii (with a Republican governor) confirmed birth and citizenship immediately, and the BC was released to the public in June of 2008. At that point anyone not motivated by insanity, blind partisanship, or racism, should have been done with the subject. Had the candidate been white, that would have probably been the end of things.

Oh hell, read for yourself.

The survey I linked was from 2012, long after any sane person should have been done with the issue. I think it's an inexact but useful proxy for identity politics.