In this May 19, 2013 photo, a mask and spikes for puncturing tires lay next to the feet of armed men from a local self-defense group as they ride in a pick-up truck near the town of La Ruana, Mexico. ... more 
In this May 19, 2013 photo, a mask and spikes for puncturing tires lay next to the feet of armed men from a local self-defense group as they ride in a pick-up truck near the town of La Ruana, Mexico. Self-defense groups started to spring up in February to fight back the Knights Templar drug cartel which is extorting protection payments from cattlemen and lime growers, butchers and even marijuana growers. The federal government sees both the self-defense forces and the cartel as dangerous enemies. (AP Photo/Marco Ugarte) less 
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Associated Press | Photo By Marco Ugarte
Wed, May 22, 2013 5:35 PM EDT