People may bully or harass others because they see them as different: their size, race, gender or what they wear. It could be because they want to belong to a particular group. It could be fear or jealousy or distrust. It could be lack of knowledge or misunderstanding. It could be that the person who is bullying is being bullied or harassed by others. A person who is bullying may want to show they have more power than anyone else. Bullies can be boys or girls. Boys tend to bully with physical aggression and pick on those who are smaller or weaker than themselves. Girls are more likely to use mean gossip, unkind notes, or social forms of intimidation when they bully. Bullies are children who lack compassion and a sense of how other people feel. Bullies like to dominate others to feel powerful themselves. Many bullies have parents who have modeled aggression as a way to get what they want. Some bullies feel hurt or powerless inside because they have been bullied themselves. However, bullying is not a remedy for feeling powerless. Bullying often gives only a false sense of power and usually costs a bully popularity, friendships, and more. As many as 1 of 4 children who are bullies in elementary school have a criminal record by age 30.