As we continue to mine the Earth for its resources, global corporate interests are fighting to get to the dwindling supply. And as the stakes rise, so has the death toll of our planet’s defenders.

Last year was the most dangerous year yet for environmental activists, the watchdog group Global Witness reported on Monday. An average of three environmentalists per week were murdered for resisting resource extraction and pollution by major agribusiness, mining, and logging interests — with 185 activists total murdered around the globe. (The murder rate was 59 percent lower in 2014.)

Of the 185 dead, many were assassinated; others were tortured, or publicly executed.