A man who shot to death four children and two teachers was executed in front of cheering crowds near the two schools where the killings took place. As a single sharpshooter executed Mohammed Nazari, 48, crowds yelled "God is greatest" and "long live justice." Witnesses said it was the first public execution in decades. Nazari was sentenced to death for opening fire with an assault rifle on the neighboring schools March 30. Yemen's highest court on Thursday approved the death sentence ruling of a Yemeni appeals court, but overturned an order that Nazari's body should be nailed to a cross and displayed for three days.