 The eastern half is currently consumed in turf wars and causing large amounts of violence.For example, on 13 May 2012, 49 dismembered bodies were found in a mass killing and Los Zetas took responsibility.Mexican President Felipe Calderón, who began his term in 2006 and will be ending his term December 2012, focused his presidency on a drug war against the cartels, which is a $39 billion industry.