Dr. Umar? Usually I'd lend his ideas credence but my populist anti-credentialism makes me distrust anyone who calls his or her public persona "Doctor".
Sorry!
The guy is big in the Black community and he's gonna give Democrats a lot of problems in the future over interracial marriage and reparations, so he's gonna be a thorn in the Democrats' for years to come.
After 15 years, most people in this country have no idea who Jeremiah Wright is, and he has a much closer connection to any individual famous person than this "Dr. Umar" character does.
Even if it is more prevalent than most liberals would admit, there's really no salience in the Black anti-interracial marriage stances that you see in a lot of Black circles. Liberals will excuse it and swing voters will bury this under a hundred of other juicier culture war topics.