“The dismaying truth is that birtherism is part of a larger pattern of rejection of reality that has taken hold of intimidating segments of one of the two political parties that alternate in power in our governing institutions. It is akin to the view that global warming is a hoax, or that the budget can be balanced through spending cuts alone, or that contraception causes abortion, or that evolution is just another theory, on a par with the theory that the earth is six thousand years old.”