Our kids watch so many videos on their cell phones that you don't know if it's just messing around in the yard or something worse. I noticed in my older son that he started to talk down about the "weak" in the class; I picked it up right away and talked to him. Good that you write it, because "it's nothing" is the first mistake we make.
My grandson is just at that age when a phone is in his hands all day long. I also noticed that I began to repeat phrases from some videos about “weaks” and “losers.” I immediately sat down to talk to him, just like that mother from the comment. It’s good that the article reminds you that you need to react to such words immediately, and not wait until it turns into fights.