Roper v. Simmons, 543 U.S. 551, is a landmark decision by the Supreme Court of the United States in which the Court held that it is unconstitutional to impose capital punishment for crimes committed while under the age of 18. From Wikipedia
Karmelo Anthony, 17, accused of fatally stabbing Austin Metcalf, will not face the death penalty or life without parole due to Supreme Court rulings.