The message is clear: We're going to kill that fawn and anyone and everyone who stands in our way. Doesn't matter that it is over an utterly trivial issue.
The solution is equally clear: Every one of those 15 officers needs to be fired and stripped of any retirement benefits they may have accrued. Not only them, but everyone in the chain of command above them, right up to the top of the agencies they work for. Then strip the agencies themselves of all their SWAT gear. These jack-booted thugs need to learn that they are our servants, serve at our pleasure, not the other way around, and when in the presence of civilians they need to tread as if on eggshells, never for an instant giving the impression that they think they are our superiors. The balance needs to be restored.