Abstract
In the years after the World War II the nuisance by young people has increased much by different reasons. Radical changes in the society and in the family life, have given the possibility for more criminality in shops and public places and public transport by less surveying personnel. Often young people has already a punishment book for not paying for public transport or damages. Young people form their own groups and are against the adults. Prevention is the best policy, more enforcement leads to more escalation of the problem.