This is a ceremony in honor of a half Christian, half Mayan idol/rebel called Maximon.
It is supposed to be Saint Simon mixed with some other Mayan god. You can find the original one in Santiago, a village around Lake Atitlan in Guatemala.
The legend is that Moximon was the first true rebel back in the 1600's that stood up against the conquistadors. Everytime they jailed him, he would miracolously escape within days and continue his preachings and rebelling against them. Finally they brutally killed him and within one week all the neighboring villages said he reappeared in all of them at once.
If you look closely they are holding a Coca Cola bottle. Oddly enough, at the end of the ceremony they open up the Coke for the gases to come out. They think these are spirits and it's part of the offering.
Travel photo shared by Marina K. Villatoro