EMPs are not very effective, if they were then they'd be getting used against drones in Ukraine / Iran.
Internet is here to stay, which is a good thing because it means you can no longer do evil and get away with it. Your history now dogs you for your whole life. Lot of chosen people are getting absolutely demolished by this little technological landscape shift.
Reason I say TND unlikely is because it introduces too much friction and uncertainty. Total = also Thomas Stowell, and Clarence Thomas, and Wynton Marsalis, etc.. Lot of people will disagree with that. Look how much heat Israel has drawn from the destruction of Gaza, and those people are not even integrated in Israeli society... Also it will drive the blacks to unify into their own army which will engage in guerrilla fighting to save themselves -> Friction, risk, cost are unacceptable.
Also economic impact is huge. Lots of blacks working in businesses, they're trained up on the job, they're experienced, losing them is a big cost.
The path of least resistance is "everything stays the same, except only we vote and hold office from now on"...