Is it positive by allowing ex-prisoners to speak to teenagers to deter them from committing crimes.
It is true that ex-prisoners can become normal, productive members in society. I compelely agree that allowing reformed offenders to speak to young people is the best way to discourage them from breaking the law.
In my opinion, teenagers are more likely to take advice from someone who can speak from experience. Reformed offenders can speak to young people from the experiences about how they became involved in crime, the dangers of a criminial lifestyle, and what life in prision is really like. They can also dispel any ideas that the teenagers may have about criminals leading glamorous lives. The adolescents are often indifferent to the guidance given by older people, I can imagine most of them are extremely keen to hear the stories of an ex-offender. The vivid and perhaps shocking nature of these stories is more likely to have a powerful impat.
The alternatives to using reformed criminal to educate teenagers about crimes are much less effective. One option would be for police officers to visit schools and speak to young people. It would be helpful in terms of informing the teens about what happens to lawbreakers when they are caught, but young people are often reluctant to take advice from figures of authority. The second option would be for school teachers to speak to their students about crime, but I doubt that students would see their teachers as credible sources of information about this topic. Finally, educational films might be informative, but there would be no opportunaty for young people to interact and ask questions.
In conclusion, I fully support the view people who have turned their lives around after serving a prision sentence would help to deter teenagers from communitting crimes.