Questions around the circumstances and subsequent individual actions of the officers involved aside; Semperlex touches on another general issue. In this, as in so many other cases, it sounds like a far more reasonable approach would have been surveillance, search warrant, grab subject outside his home somewhere, and then execute a search warrant in a more relaxed fashion.
This would reduce the risk to both innocent bystanders inside residences, police personnel involved, and all those in cases of mistaken addresses etc.
The natural reaction to any sudden home invasion is to repel with force. And rightly so. Citizens can not be expected to throw themselves prostrate before any sudden home invasion or unannounced entry. So every time warrants are executed in this fashion there is a heightened risk to all concerned which in many cases is totally un-necessary.