The age of criminal responsibility is 10. Why did the police not prosecute a 14 year old for a violent crime. See above. Police are not social workers but are they there to prosecute crime. The purpose of the law is not to protect us from evil doers but to protect the evil doers from our excessive revenge. The police are scared of vigilanteism as it would do them out of their wages, pensions and driving round in free cars. Paul