From the sounds of this article, it just strikes me like a couple of bad apples got swelled heads from the weight of the badge (although the ignorance from the higher-ups is concerning). I think the takeaway is to be alert and proactive, and just be courteous and non-confrontational in a tense situation. I frequently wonder when reading these reports what actually went on...but didn't make it into print. Take names and badge numbers if necessary, but no need to hire an attorney. There are several steps to be taken before that point, i.e., sheriff, congressman, Sacramento, etc.
On the positive side, if stuff like this happens and is rectified, there is a chance that the pendulum will swing the other way -- DPW not wanting bad press, etc., with a new administration and new policies.