The Forums of Guanajuato

"The Mexican government has deployed federal police and military personnel throughout the country as part of its efforts to combat organized criminal groups. U.S. citizens traveling on Mexican roads and highways by car or bus may encounter government checkpoints, staffed by military or law enforcement personnel. In some places, criminal organizations have erected their own unauthorized checkpoints, at times wearing police and military uniforms, and have killed or abducted motorists who have failed to stop at them. You should cooperate at all checkpoints."
State by state alerts 7 May 2015:
http://www.travel.state.gov/content/pass...rning.html
--D. Phillips U.S. Embassy Warden for City of Guanajuato