A bomb exploded Wednesday on a central Baghdad street, killing three girls and a boy walking to school, police and relatives said. The dead included two sisters and their brother. At least 14 other people, including six policemen, died in car bombings and shootings across the Iraqi capital. The children were killed when a bomb exploded in central Baghdad’s bustling Fadel area near a camera shop that also sold alcohol, police Lt. Ali Mittab said. The target was unclear but religious extremists often attack stores that sell alcohol or DVDs deemed pornographic. Full Story