galadriel, that incident is indeed disturbing. I would certainly question the officers judgment and his ability to perform his duties properly.
As for the fine, I've been on both sides of the badge. I was a cop in Detroit for a few years before being invited to join the Army (drafted in 1973). There were times when I had to enforce a law I disagreed with because there was a complaint.
One of my neighbors (moved away thank god!) called the police on me for shooting my bow within the city limits. We live on a lake on an acre of land, but it is within the city limits and there is a city ordinance against discharging just about anything within the city limits. The responding officers apologized for having to come to my house. I told them not to apologize for doing their job. They told me they thought the neighbor was being pretty petty (not their words
) and didn't write me a ticket, but asked me to stop doing it. I hate the neighbor's guts for calling the police on me when he could just as easily come to the house and told me he had a problem with me shooting my bow, but technically he was right and I was wrong.
I don't like the ordinance, but I understand the reason for its existence and know the history of why it was enacted. Now that the neighbor has moved, I get along great with all my neighbors and have started shooting again with no fears that someone will call the police again.
Michigan has a law against target shooting on public land except at approved target ranges. As pointed out above, there is always some thing that is legal to hunt all year round, so as long as I have a small game license, am outside the city limits and claim to be hunting one of those creatures, I'm pretty safe from getting any tickets. If I were to admit I'm target shooting (and that would include stumping I'm sure) I'd be violating the law. Why put the officer in the position of having to ignore the law if he wants to give me a break when I can avoid breaking it just as easily.