Why is NZ still sending children to prison?

Last week Queensland became the last remaining Australian State to include 17 year olds in the youth justice system, leaving New Zealand among the few countries that send youths to prison. Kathryn Ryan speaks to Dr Katie Bruce, the director of JustSpeak who is lobbying for a change, human rights lawyer Sonja Cooper who's had 30 years experience as a Youth Advocate & Sam Haggart a youth worker from Tutaki Youth in Stratford.