You’ve probably never heard of The Doe Run Company of St. Louis or its subsidiary’s copper and lead smelting operation in the small mountain village of La Oroya, Peru, about 112 miles from Lima, but not long ago, the village had a distinguished visitor, Dr. Patrick Moore, co-founder of Greenpeace and chairman and chief scientist of Greenspirit Strategies. The day he arrived, La Oroya’s mayor was leading thousands of marchers. Were they protesting Doe Run Peru? No. They were demonstrating against anti-mining activists, like Oxfam and groups tied to Christian Aid, the Sierra Club, EarthJustice and Friends of the Earth...