National Geographic and MediaStorm’s latest collaboration is Gorilla Massacre, now featured in the online edition of National Geographic Magazine.This story takes place in the heart of Africa, where humans and animals alike have long suffered a history of violence and instability. It is the home of the endangered mountain gorillas, and where Dian Fossey conducted her intimate research on their world.Photographers Michael Nichols and Brent Stirton discuss the significance of the recent mountain gorilla killings in the Democratic Republic of Congo.