there is abundant proof of the men's activities. even notes on how many trees they cut down. this wood goes to local cattle ranchers, who build fences around their area and they're selling the stakes for those fences. and it even shows right here how much money they're making. the leader, whose name is laercio guajajara, lectures the suspects. why did you agree to do this work? "because," he says, "i don't have anything." laercio says more than a third of his ancestral homeland has been destroyed. scientists now worry that the amazon may be at a tipping point. after raging fires and an increase in illegal logging, deforestation doubled in january compared to last year. after forcing the loggers to burn down their own camp, laercio's group brings them to brazil's federal police. less than two months after we leave, laercio is ambushed and shot by loggers, his deputy