Girls are becoming more violent. Usually weapons are not involved. It's often girls beating up each other, or even their boyfriends. Girls are the hardest to work with. They're often oppositional and have a chip on their shoulder.
Boys have more respect for women.
Maybe it's because many have been raised by single mothers or grandmothers. Their behavior at school. Sometimes this behavior carries over to the home. Gang members back each other up and support each other. Yet how they go about it is wrong.