There should be some rework here.
I am cop, and I get killed because I shoot person which is on "hit-list" side and have 0 stars.
Also, people that are wanted also have 0 stars are immune to police (we can't kill them, because when we shoot them our health is drained instead theirs).
My proposal for solution: make wanted people that have 6 stars no matter what, so they can be killed only (when is killed, person is no longer wanted so it can be removed from map). Also, if someone joins them, he/she should be either killed/jailed or automatically also wanted as helper (eg. with 4-5 stars).