Actually, I think they cut their heads off. An Afghani court has sentenced a student journalist to death, according to CNN. His crime? He downloaded an article the court didn't like and shared it with his classmates. Something to do about better treatment for women, a suggestion that can obviously get you killed in some countries.
Even though the United States likewise still executes its young, at least they get the benefit of counsel and open, if not always completely fair, trials before we fry, gas, hang, or shoot them.