A woman holds a sign that reads, "We demand justice after two years," during a Jan. 11 protest outside the government palace in Monterrey denouncing the disappearance of family members in the state of Nuevo Leon. Reuters/Landov hide caption

itoggle caption Reuters/Landov

Armando Tenorio at his home in Mexico last December. Tenorio spends most of the year working on a blueberry farm in Canada, on a temporary work permit, to support his family in Mexico. Dominic Bracco II/The Washington Post/Getty Images hide caption

itoggle caption Dominic Bracco II/The Washington Post/Getty Images

Masked and armed men guard a roadblock near the town of Ayutla, Mexico, on Jan. 18. Hundreds of men in the southern Mexican state of Guerrero have taken up arms to defend their villages against drug gangs. Dario Lopez-Mills/AP hide caption

itoggle caption Dario Lopez-Mills/AP

These weapons, in the Iztapalapa neighborhood of Mexico City, were handed over by their owners during a government program that accepts weapons in exchange for bicycles, computers, tablets or money. Marco Ugarte/AP hide caption

itoggle caption Marco Ugarte/AP