I hadn't heard about this specific issue but I am aware that a portion of black students was looking at escalating protests (I don't recall to what level) over the threat of removing affirmative action programs at UMich as part of state legislation.
AA gets a lot of complaints from some groups because it "doesn't look like the rest of the state". I'm a transplant -- like 75+% of people in AA (Ann Arbor) -- but from what I have observed Michigan has: Detroit (70%) and Flint (60%) which are black, Dearborn is middle eastern and the rest of the state is largely "white" people who wear a lot of cammo, hunt, and work in manufacturing/tech/farming. So the state is full of transplants: African Americans who moved from the south, eastern Europeans, and more recent newcomers from the middle east. To me, that actually sounds a lot like AA.
@JSN could maybe weigh in here.