Why is Neil DeGrasse Tyson promoting the career of unapologetic racist Michael Shermer?

Apparently Neil deGrasse Tyson considers Michael Shermer, a devotee of the crankiest possible brand of race pseudoscience, " someone I can claim as a friend for decades ." What is wrong with Neil deGrasse Tyson? Why is he a friend of a right-wing political activist who is not at all shy about his admiration for race pseudoscience? Although, naturally, Shermer doesn't admit to being a racist. But…