The protests over Qurans burned at Bagram air base in Afghanistan show no signs of abating. At least four people have been killed and 20 injured in the second day of demonstrations. U.S. officials apologized for “inadvertently” putting the religious texts in an incinerator after they discovered Taliban prisoners were using them to pass messages to each other. NATO is investigating the incident. Last year, at least 24 people died in protests after an American pastor burned a Quran in Florida.