<<What makes you complain about the citizens?>>
I think of cases like that homeowner in New Orleans who shot and killed a Japanese student visitor trick-or-treating on Haloween. Or that fucking moron in Michigan who left a loaded gun in the oven, which then fired when the oven heated up, killing a child. I'm all for self-defence, but I'll bet that if anyone kept stats on gun homicides in America, the slaughter of innocent victims would dwarf the cases of homicide due to armed legitimate self-defence.
<<I think the Police ought to use raiding tactics with circumspection , only when it is the best choice.>>
Well first they need a warrant, don't they? A judge has got to review affidavit evidence showing why the need to enter, and I guess in a no-knock warrant, there'd have to be a shitload of affidavit evidence justifying the need.
<<When they are unsure of the correct address , milder actions ought to be tried first.>>
I don't know the state of the law in the U.S. or even Canada on this, but I'd imagine if they couldn't swear to the correct address, they would not get the warrant. They gotta do a LITTLE homework before the judicial system will authorize them to kick down someone's door. I'm sure there are abuses of the system, false affidavits, complaisant judges, but the remedies exist. No system is perfect. But the police actions are subject to judicial oversight before and after. The actions of some nut with a gun are subject to judicial oversight only after the fact.