Elizabeth Dickinson is a freelance journalist and former assistant managing editor at Foreign Policy.
MEXICO CITY — On a quiet November day nearly two years ago, Luis Angel Leon Rodriguez called his mother, Araceli, to tell her he would be leaving town for a while. The 24-year-old federal police officer was being sent on a mission to Michoacán, one of Mexico's hottest states for organized crime. He would earn a bit more money in the danger zone, he explained. His mother implored him not to go; Luis Angel brushed off her fears.