Remember during Clinton's reign that "local cops" were seldom involved in many of the no knock raids. Those raids normally targeted conservatives or political enemies who just happened to own something that certain political chiefs wanted to add to their collections - whether it was real estate, large gun collections, money, etc. Quite often the objects of the warrants were never found, but mysteriously the occupants of the homes being raided somehow resisted 'arrest' and were executed on site.
The practice has nearly stopped completely under president Bush, but there are still some instances of Federal LEOs who think they are above the same laws they enforce, or that think their version of the same crimes is justified due to their performing a "public service".
I fully support law enforcement, and work with my local sheriff's department whenever I possibly can because they have earned my respect through their professionalism - as well as their refusal to conduct no knock raids unless there is a life at stake. The DEA/BATF/IRS JBTs under Clinton/Reno were bordering on becoming paramilitary death squads, IMO.
We have a very low crime rate in our community. If I actually heard someone outside my door yelling police I'd just wonder who wanted to borrow what now?