New research has found that three people are killed every week while trying to protect their land from extractive industries. The report by Global Witness documents the murders of more than 1,700 environmental activists over the last decade by mercenaries, hitmen, criminal gangs or their own governments. Topping the list of the world’s deadliest countries for environmental defenders last year was Mexico, with 54 murders. That’s followed by Colombia, Brazil, the Philippines, Nicaragua and India.