By the time he was seven, both his parents were gone.
At fourteen, he was paying for food by stealing computers and phones.
After years spent in and out of the juvenile detention system and the prison system, Keenan began to turn his life around.
He fell in love and married his wife Carly, an aboriginal woman with a Master's degree in Criminology.
Three years ago, they co-founded Deadly Connections, a not-for-profit organisation designed to help indigenous kids trapped in a cycle of poverty and neglect
Keenan has since spoken at the United Nations in support of raising the age of criminal responsibility in Australia from 10 to 14.