I watch movies and tv shows where fictional people die all the time, and I don't have a problem with it. But I make it a point not to watch videos of real people or animals dying. The difference (to me) is that I can sleep happily knowing that the actors in the films went home to their families after filming, but the people in real life didn't. It's much more profound to know that a real human lost their life, and I don't want to lessen the gravitas of these situations by watching it as casually as I watch fictional characters die.