I don't intend to defend the original poster you replied to, but I think you must be missing plenty of the 'Sorry, citizen. We thought you were someone else' accounts that appear here on FR regularly where rambunctious overzealous cops in tactical gear perform forced entries on an innocent person's house.
Happens all the time, you know. Some people are even killed.
I, for one, am not willing to risk these mistaken no-knock raids at the expense of catching someone with cocaine. Incidents like these have a way of making honest people clam up when dealing with the police. Maybe you can understand that.
However, there is a difference between poorly trained and lazy police making stupid mistakes and a calculated war directed at law-abiding citizens.