One consequence is for the brothers Tilmon and Kevin Golphin. Tilmon was 18 and Kevin was 17 when the crime occurred. At the time, both were convicted of the death penalty for the same event. However, due to the US Supreme Court ruling, Kevin later had his sentence changed to life in prison. Tilmon is still on death row.
Their situation presents a lot of moral questions about the death penalty, morality, fairness, and so on. Justice is never going to be fair, and it is always hard for a society to determine the correct balance.