I don't blame the police completely either; it's the system that allows for these unfortunate incidents to occur almost on a daily basis.
The present system says that given the choice of allowing a druggie to flush his pot down the toilet or startling an innocent citizen with a dynamic entry, the choice should be the latter.
I'm willing to allow the druggies to flush their dope if that means to put an end to dynamic entries under the excuse of a drug bust.
If a big-time drug dealer tries to flush dope down the toilet, the evidence will be too overwhelming to disapper from his toilet bowl and sewage pipes.
If cops suspects that a drug dealer has tried to tamper with evidence using the toilet, then his toitet bowl should be removed and the sewage pipes examined for evidence.
I seriously doubt that major drug evidence can be flushed down the toilet, and that seems a common excuse for these dynamic entries.
Before the War on Drugs, people tried to destroy evidence all the time; for example, throwing a an incriminating document into a fireplace while the cops were knocking at the door; nevertheless, dynamic entries were not that common. . . a man's house was his castle.
I'm not totally familiar with residential sewering, but I'd think it'd be possible to shut down the utilities to the location immediately before the raid. Heck, druggies and stoners aren't likely to notice the water being off, or if they do, they might realize that they occasionally have to spend money on the water bill instead of on dope...
I seriously doubt that major drug evidence can be flushed down the toilet, and that seems a common excuse for these dynamic entries.
In order to legally serve a warrant without knocking, the "dynamic entry", the police have to have a special addendum on the warrant. One would think that the judges ought to take a closer look at those requests. Yes, usually the justification is to prevent the destruction of evidence; also officer safety - a concept loathed by the druggies and stoners - is cited as justification. If the police burst in throwing flash-bang grenades, it's more difficult for the druggies and stoners to attempt to ready their weapons to murder said police officers.