RIO DE JANEIRO – Another rural activist was found shot to death in the Amazon on Thursday, just three days after Brazil's leaders discussed how to stop the region's deadly disputes over logging and protect those whose lives are threatened. Police in Eldorado dos Carajas, a town in Para state, said the slaying bore the characteristics of an execution, but gave no further details. The victim was identified only by his first name, Marcos. Two witnesses initially tried to take the wounded activist to a hospital, but were stopped en route by gunmen in another car who got out and finished off the victim, the police chief of southeastern Para, Alberto...