ProPublica, the investigative news organization, has published a terrifying account of how U.S. actions in Mexico led to the murders of dozens--the article says it could even be hundreds--of innocent people in the city of Allende, Mexico, who were caught up in a drug cartel's murderous quest for revenge. The author of the article, veteran correspondent Ginger Thompson, lays out in sobering detail missteps by the U.S. Drug Enforcement Agency that led directly to the massacre.