Alarming footage shows people said to be shop workers and street vendors dragging him through the downtown area with a rope around his neck.
He is taken to the main square and displayed in front of hundreds of onlookers.
At one point, the 24-year-old man identified in local media reports as Luis Hernandez Dominguez is captured cowering on the floor and holding his mouth and head after being reportedly beaten.

The mother of the alleged victim also hit the suspect with a belt and shouted insults, reported Televisa.News.
The mob fracas occurred because residents and workers are said to be frustrated with an increase in robberies in the city, which is known as Paris Chiquito (Little Paris).
Mexican news site NVI Noticias reported that the crowd made threats to “burn” the alleged thief, who had tried to hide in a house before being cornered by the mob.
Cops said it took them four hours to persuade the mob leaders to hand the man over to their custody.
Hernandez was taken to a police station and charged with robbery.