It all begins at home. I have observed parents to encourage violence. Parents need to stop being their friend. Not saying this kid is in that situation, but if he was raised with good manners, this would not happen. This is the generation that we are up against - violence. We as adults do not have to put up with this type of mentality. Correct the and punish them enough so they will never do this again in LIFE.
IGNORANCE AT ITS BEST
He will respect an adult from now on(lets hope).