Being fairly new to this, I'm learning what people will do to take a photograph. So far, it hasn't reach the depths of some examples here, but these two things happened in the last week:
1. There was two of us watching this coyote asleep in a patch of grass, approx. 10m off the trail. After about 30 minutes, this couple turned up and we waited for well over an hour. After a while, the couple began to get impatient and started to loudly break bundles of sticks and walk on the brambles on the edge of the trail to try and wake the coyote up so he would do something.
2. Today, I was out looking for Northern Pygmy Owls and there were a few people about. It was getting late and one of them pulled out his phone and started playing owl calls. It got the owl calling back, but it didn't make an appearance. As creatures that operate on stealth, I'm not sure artificially encouraging them to call back is a particularly good move.
Personally, I would never dream of doing these things, but I'm not sure they are serious enough to start a potential confrontation. Furthermore, I don't profess to know enough to speak to them factually, so that's on me, and something I'll research, so I can say something next time.