Why are Tiktok users so, violent, stupid and irrational?

My little bro got kicked in the balls by some girl and had to see a doctor. I found out that there are lots of videos like this where things are thrown at people, or slapping each other in the faces.
Our generation never had these issues, and it looks like a new trend for these teens to record themselves hurting each other.
Why are Tiktok users so, violent, stupid and irrational?
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