Mike O said:
I just slipped again. This is horrible. I can’t stop. It’s getting worse.

You might try to find some way of limiting your internet access so that you’re not tempted to look at things that distress you. I know it’s hard, but you’re going to have to stop yourself from accessing these videos in the same way that someone who is trying to lose weight mustn’t have certain foods in the house. What you have described is almost certainly a form of obsession, but it also sounds like a kind of addiction too, so you have to avoid people, places, and paraphernalia – in other words, anything that might cause you to slip.