I voted for Obama. However, in retrospect, he was part of the shift of the American left into an authoritarian version. Those collegiate "progressive" protesters who say, "F your free speech" are part of this unfortunate shift.
which toxic culture are they supposedly glorifying?
Urban thug culture.
There is a genteel African American culture. I've known people from that thread of American culture. It valued learning, rationality, responsibility, and manners. Also, not all Black Americans are too crazy about Obama's legacy.