Setting fire to a six-pointed star (locals refer to as the Star of David) is part of a "black mass" ritual supposedly aimed at fending off evil spirits. Catemaco, Veracruz, is Mexico's cradle of sorcery and witchcraft.
© Courtesy of Ayuntamiento de Catemaco, 2010
Source article: Catemaco: Mexico's cradle of sorcery and witchcraft