Incompetence
When my son was a baby, maybe 2 years old, I distinctly remember an episode on a playground where he and a number of other similarly aged children were playing in a sandbox. They were all friendly, or at least indifferent towards each other and readily shared the toys that were randomly cast about in the sand. Except for one child. He would scream bloody murder anytime another child put a finger on a toy he was even mildly interested in. Regardless of the toy, he'd throw a fit if another kid so much as looked at it. I always paid special attention to situations like this. Some children would get upset. Some children would quizzically observe. And yes, a select few children would act with aggression. I watched the episode through to its logical conclusion. A parent on their phone, not paying attention to the present, looking up in horror as her child smacks another kid in the face with a sand shovel, picks up the toy that wasn...