I'm opposed to no-knock warrants because if someone breaks down my door in the middle of the night I'm going to start shooting. It doesn't matter if they are shouting "POLICE!" or not because anybody can shout that.

It appears BT was a villain and needed to be arrested, so I'm sure the warrant was valid. I still think it's something that needs to be done away with or at the very least, much more restricted. You'd need to really prove that the no-knock is necessary for safety of officers and the public.