That is the tactic. Give a bunch of guns to non-whites. Cuck your police force to be scared to do anything to non-whites. Brainwash non-whites into thinking whites are evil. Have non-whites use the guns like non-whites do at whites. Get white people scared of guns. Take away the guns.
In reality the solution is to shut down immigration, kill all leftists and enforce a moral society run by moral people instead of letting criminals do criminal things.
I think your scenario would have the opposite effect