Share Hans Merket, a researcher with the International Peace Information Service (IPIS), says he didn’t go into Tanzania expecting to learn about people getting hurt and killed. His group simply wanted to measure how mines were viewed by surrounding communities. But when they got to Mwadui, the area around the Williamson diamond mine, he kept hearing how mine security forces had taken violent action against purported trespassers on the mine area. There were reports of people being shot, stabbed, beaten, locked up, and killed. “We really stumbled on these abuses,” he says. “We usually don’t do advocacy. It’s not our specialization.”