Some children have been spoiled since childhood, perhaps because they are the only children in the family, so their parents absolutely support whatever they do, right or wrong. This is the so-called doting. Therefore, once such a child is integrated into the school and society, it will be taken for granted that everyone should revolve around him, not everyone like their parents.
The formation of those so-called social hooligans may be partly due to the good conditions at home, so they are overbearing. He has many fair-weather friends around him, so he exchanged some of his strength for money. It may be because they were bullied by others when they were young and gradually became stronger, so they wanted to retaliate against their bullying in the same way, which turned into a series of sad campus violence.
Of course, the above only represents my personal views, and not everyone will be affected by the environment. If his world outlook and outlook on life are correct, he may grow up in adversity. The phenomenon of school violence should be changed at an early age, because many school violence occurs because parents and teachers do not attach importance to children's ideological education, which leads to such a sad result.