In Brazil, a top Amazonian land reform activist has been shot dead in a targeted attack. Pedro Alcantara de Souza was killed Thursday by two gunmen on motorcycles. Souza headed a union of landless farmers in the Brazilian state of Para. He had led a series of occupations of large farms in a campaign for equitable distribution of land. His murder came hours after a trial was delayed for the suspect accused of murdering the American nun and rainforest activist Dorothy Stang, who was killed in 2005 in the same state.