In the other video, the first float was the Last Supper, and the second float was the BVM. For that video I explained costumes. Men in hatted costumes are called Nazarenos or penitentes – the penitent ones. They are members of various brotherhoods and dress in capirote, which is a Catholic, cone-shaped, pointed hat from the Spanish Inquisition (start 1478).
Catholicism is a symbol-rich religion that activates all five senses. Where is the king of Spain?