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I think you're absolutely right. In fact, people have to train themselves not to when it's right in front of their eyes. I've seen wildlife documentaries where the crew was watching a baby elephant drown in the mud or something and all the while commenting how sad it was but how wrong it would be to help (why?).

A friend of mine calls wildlife documentaries snuff videos because so many people enjoy watching animals die terrible deaths by predation or other causes.