Leonard Pitts: How many people would choose whiteness over democracy?

"If people were given the choice between democracy and whiteness, how many would choose whiteness?"Taylor Branch, the Pulitzer Prize-winning historian of the Civil Rights Movement, drops that question like a bomb on Page 352 of "Caste," the new book by Isabel Wilkerson, herself also a winner of Joseph Pulitzer's prestigious prize. There are many moments in "Caste" that bring you up short in the starkness of their truth. But none hits quite as hard as that one, nor cuts quite as close to the bone