Society's perception of the greasers as hoods or juvenile delinquents is unfair, because this view is a hasty generalization, or a stereotype. A hasty generalization or stereotyping occurs when a large group of people are labeled a certain way based on a small sample of that population; that percentage is too inadequate to form any sound conclusion.
In The Outsiders, many of the characters, like Dally Winston, for example, embrace their juvenile delinquent status as a greaser. Dally liked to boast about his police record and carefully cultivated his 'tough-guy' persona among the greasers; however, many other greaser boys were hard-working and serious like Ponyboy's brothers, Darry and Sodapop. They may have lived on the poor East side, but their behavior did not match that of a juvenile delinquent.
Being called a greaser in The Outsiders was an unfair stigma, one that resulted from false and inaccurate stereotypes.