I have little sympathy for fellows dressed in black with face-masks on and brandishing high-power weaponry who break into wrong houses unannounced and get shot at for it. The problem there is that you get a gunfight wherein the homeowner is always in the wrong even if he's in the right, and very likely dead as well. Any practice resulting this way needs serious examination.
The effects of fighting the drug war is probably twice as bad as the damage drugs actually cause.