Suspected drug hitmen burst into a Mexican radio station and shot dead a journalist in front of his colleagues in the latest brazen attack on the media, authorities and a Mexican newspaper said on Thursday. Gunmen shot Norberto Miranda, 44, several times in the rural town of Nuevo Casas Grandes in Chihuahua state near the U.S. border on Wednesday night. "His body was found full of bullets in the radio's offices," said a spokesman for the Chihuahua attorney general's office. The newspaper El Diario said Miranda, who was well-known locally, had recently reported on growing drug violence in the remote...