Frankly speaking, there is no single reason behind why anybody becomes a bully. There could be so many reasons. But still, bullying is a disorder.
It reflects a person's lack of empathy. As bullying affects both the victim and the person who is bullying, it should be eradicated during childhood itself.
But what are the reasons for such behaviour? Let's take a look. In some cases, when the parent is a bully, the child tries to imitate th same behaviour. So if you are abusive, your child may try to be like you.
Some children who are bullied in the past by some others try to feel good by bullying someone else weaker than them. Some kids who are ignored by their parents tend to turn to bullying to vent out their frustration in the school.
Some spoiled brats also tend to turn into bullies. As they have been given every comfort they want, they tend to take things for granted.
This way, there are several reasons why kids turn into bullies.
If parents could identify and eradicate the reason, there could be a change in the behaviour of the kid. As domestic conditions create the seeds in the mind of a kid, its important to ensure good upbringing.