Writing to your Member of Parliament, supporting her or him in taking a balanced view of how best to tackle offending, particularly at a time when legislation is being debated. Most MPs welcome letters that are presented reasonably and well-argued.
Telling your friends of your experiences, and contributing to discussions which seem to lack balance.
Writing to newspapers which appear to be whipping up a fear of crime without good cause - distorting crime statistics, misrepresenting young people, undermining confidence in Judges and Magistrates and using un-necessarily derogatory language to describe offenders. Be concise and get your letter in as quickly as possible after the offending article appears; most publications have an e-mail address for letters.
Telephoning phone-in programmes on local radio stations.