What’s a good cause? I’ve had many a discussion on the same subject elsewhere. Why do the police use no knock warrants and wear bullet proof vests? Just a guess here but I think it has something to do with the phenomenal number of Americans armed to the teeth with military grade weapons of their own. As a modest suggestion I have proposed that people who think the police are evolving into tools of the fascist state (popular language on both the extreme left and right) step up and volunteer to knock on those doors. This happens to be one of those issues where the ideological extremes are virtually indistinguishable.