A father's plea: End the war on drugs

(CNN) -- Why was my son murdered? He was 24, and he had never tried drugs. He didn't even smoke. He had paid half his university costs with a sports scholarship and was working as administrative staff at a cardiac clinic in Morelos, Mexico. Why then was my son suffocated by hit men from the Gulf Cartel? Why did his six friends, just like him, die at his side?