Photo: Ernestina Enriquez Fierro walks at the front of a group of marchers during an International Women's Day march organized by mothers of disappeared daughters from the border city of Ciudad Juarez in Mexico City, March 2013. Fierro's daughter, Adriana Sarmiento Enriquez, 15, disappeared on January 2008 and her body was found in Nov. 2009. Authorities returned the body to her mother in 2011. AP Photo/Dario Lopez-Mills.