A participant wearing a tiger mask performs during the “Paseo del Pendon”, a traditional artistic march in Chilpancingo, December 21, 2014. The “Paseo del Pendon” (walk banner) is a traditional celebration in the streets of Chilpancingo to mark the begin of the the year-end festivities in the city. (Photo by Jorge Dan Lopez/Reuters)

Revellers dance during the “Paseo del Pendon”, a traditional artistic march in Chilpancingo, December 21, 2014. (Photo by Jorge Dan Lopez/Reuters)

Participants with machetes perform a traditional dance during the “Paseo del Pendon”, a traditional artistic march in Chilpancingo, December 21, 2014. (Photo by Jorge Dan Lopez/Reuters)

Dancers performs with a banner of the Virgin of Guadalupe during the “Paseo del Pendon”, a traditional artistic march in Chilpancingo, December 21, 2014. (Photo by Jorge Dan Lopez/Reuters)

A traditional Mexican masked dancer called “Tlacololeros” performs during the “Paseo del Pendon”, a traditional artistic march in Chilpancingo, December 21, 2014. (Photo by Jorge Dan Lopez/Reuters)

A dancer waves a whip during the “Paseo del Pendon”, a traditional artistic march in Chilpancingo, December 21, 2014. (Photo by Jorge Dan Lopez/Reuters)

Ayotzinapa Teacher Training College Raul Isidro Burgos students perform a traditional dance with the pictures of the 43 missing students of September 26, during the “Paseo del Pendon”, a traditional artistic march in Chilpancingo, December 21, 2014. (Photo by Jorge Dan Lopez/Reuters)