This stuff is actually kind of hard to predict. NYPD is majority minority and local cops tend not to like the feds much.
Meanwhile, there are a ton of unexamined assumptions about the loyalty of key groups. Local cops may be no friends of protestors, but are they so tied to MAGA that they'll jump on the 30-side of a 70/30 national split with potentially fatal personal consequences? Will the guard? Active military?