I don't really have an opinion as to whether it's ethical or not ethical to video a traffic stop. It does kind of sound like lighting a match when soaked in gasoline though.
1: https://www.politifact.com/factchecks/2014/dec/08/stephen-ca...
The reality is that DAs rarely drop charges when they should (or don't enough, take your pick) and merely charging someone with a crime has lots of legal and extra-legal consequences. It's a shit system, imo, but depending on the situation people are in they either love or hate this system. If you are an agrieved party, then you likely like this system because it's laced for vengeance and action, while if you're trying to make a case that you didn't violate the law or even know that something was a law it's like walking uphill in a foot of mud.
What? Under what possible interpretation of ethics might it not be ethical to video tape a public official interacting with a citizen? This just doesn't even make sense as a sentence to me. Segmentation fault (core dumped)