The Dancing Queens of the Llamadas.
And the rest who competed for the honors of the queens, dancing too.
All that white on the poor marchers is foam. Vendors walk up and down the side of the street selling it to parents who give it to their kids to squirt into the eyes of the marchers. I find the beahvior insupportably mean, and have no idea why parents would allow their children to behave in such a manner.
Look at this poor man all foamed! Think of the cost of his costume, and how much it would cost to clean too - then think of all the dancing girls and their feathers and the rest. All foamed.
Even those who are just carrying banners wear face paint!