If you’ve seen “Grizzly Man”, rangers were furious at Tim Treadwell because he was causing them to lose their natural wariness around humans; they told him they didn’t want to have to kill them as they ventured too close to people. In the end they had to kill two because of him; the little one eating him when they found his remains (because now it knew how tasty we are) and the larger one that killed him and his girlfriend. A bloody affair that could’ve been avoided; I know he had mental issues, and understand his rationale for disliking his meds (that the ups and downs of emotions/moods are natural, and without them life is very bleak), but the outcome was tragic for all involved.
That is sad.
Near Yellowstone, there is an educational center where they have a few nuisance bears that could no longer be allowed to live in the wild. Those bears were lucky, since the center had room for them when they became nuisances. Most nuisance bears are killed.
The bears at the center are used to test bear-proof trash and storage bins. A tasty food is placed inside the container, which is placed in the bear enclosure. If the bear cannot open it within a period of time (I think 4 hours), the item is certified bear-proof. It is a tough standard. The center had some items that did not pass the test, like a metal bin that was torn on the side like a piece of paper.