On Saturday, Sunday and Monday, one week ago, here’s what happened. On Saturday, the New York Times ran a story on the drug wars in Mexico, describing how the power of the criminal gangs often outweighs the power of the law enforcers. It’s a big problem, and the violence has increased since President Felipe Calderon launched an army-led assault on the cartels soon after taking office in late 2006. More than 14,000 people have died in drug-related violence in Mexico since. The Mexican gangs, of course, are just trying to make a living by serving the demands of a...