Drug Cartels Assassinate Top Mexican Law Enforcement

Mexico's fight against organized crime has claimed 1000 lives in the past year; 25 police officers have been gunned down since the first of this month, nine of them federal agents. But one killing rattled the country more than any other. Federal Police Chief Édgar Millán Gómez was gunned down last Thursday by a man waiting for him in his apartment. Six people have since been arrested, as President Felipe Calderón urges unity against organized crime. Frank Contreras, who reports for BBC Radio and Al Jazeera English, has more on an increasingly bloody battle.