After a one-day trial in 1989, Joe Sullivan was found guilty and sentenced to life in prison without the possibility of parole. He was 13 years old.

Sullivan’s case arose in Florida, which forbids anyone that age from driving, voting, marrying without judicial consent or even riding a bicycle without a helmet. These prohibitions rest on the sound logic that teenagers are still children — too immature and impulsive to be trusted with such grave responsibilities and weighty choices. But when it comes to breaking the law, Florida inexplicably abandons this reasoning. If the transgression is considered sufficiently serious, the child is tried as an adult.