Soldiers guard a crime scene where a man was gunned down inside his car at the border city of Ciudad, Juarez June 12, 2009. Drug wars, which remains President Felipe Calderon's biggest challenge, killed more than 6,000 people across Mexico in 2008 and 2,500 people so far this year. The violence has started to spill over some parts of the U.S. border. REUTERS/Alejandro Bringas (MEXICO CONFLICT CRIME LAW SOCIETY)
REUTERS/STRINGER/MEXICO