This site is devoted to tracking the number of narco related killings in Mexico on a Google map (below).
The RED balloons are civilians. The RED balloons with a dot are high profile killings. LIGHT BLUE pushpins are journalists, and the PURPLE pushpins for politicians. The BLUE balloons are police officers and soldiers (and other law enforcement). The BLUE balloons with a dot are high ranking officers. The YELLOW suns represent car bombs while the 2 GREEN people represent mass graves.