This was the question asked over and over again after a 17 - year - old went on a shooting spree in Winnenden in southern Germany, killing 15 people and finally turning the gun on himself.
See küsimus kõlas ikka ja jälle pärast seda, kui Lõuna - Saksamaal Winnendenis tappis 17 - aastane nooruk raevuhoos 15 inimest ja lõpuks lasi ka enda maha.