Rich, I really don't believe that the outcome of this policy was correct. I do, however, believe that there are circumstances where the "no-knock" warrant service is appropriate. Just like anything else, when there is a right way and a wrong way, somebody in charge will screw it up. To decide that "no-knock" warrants are universally wrong because of this, though, is a lot akin to throwing the baby out with the bath water.
Perhaps it's time for the state legislatures to come up with a means of limiting the "no-knock" process? Maryland and Virginia, where the dentist was similiarly killed, are extremely liberal in many counties. It's appears obvious that the appointed leadership of the various LEAs in these areas lacks the ability to discern risk to it's officers, and it's population.