The OK sign the kid is doing is also a thing teenage boys do to each other to " get them to look" at that sign as a “gotcha made you look”. annoying thing. The kids do it all the time. Even my son, and I assure you he is not a white nationalist or anything. They just flash that down low, get you to look and then laugh. Stupid annoying teen age thing.
That being said, the nazi salute is totally egregious and the kids should be punished and forced to do some community service and get some counseling on being decent people.