Gwynne Dyer, an independent journalist based in London, opines on the state of Mexico's drug prohibition war against the backdrop of a remarkable event that occurred in Mexico last week. Tens of thousands of Mexicans gathered in the main squares of cities across the country to demand an end to the "war on drugs". In the Zocalo, in the heart of Mexico City, they chanted "no more blood" and many called for the resignation of President Felipe Calderon, who began the war by using the army against the drug trafficking organizations in late 2006.