This story (from The Primate Diaries):
The shocking news that four more critically endangered mountain gorillas were killed last week should make all primates of good conscience wince. Furthermore, one of the females was pregnant and another was nursing a five month old infant who is not expected to live.
According to the World Wildlife Foundation, there are an estimated 700 mountain gorillas alive in the wild. The loss of these six gorillas in the Democratic Republic of Congo represents 0.86% of the total population. This would be the equivalent of slaughtering 5,910 endangered African elephants or 60 million human beings in a single week. In human terms this is the death of every man, woman and child in England (and nearly as many as the population of Congo).
Actually it was probably the images rather than the story itself.