The Yayoflautas, or Iaioflautas is an organized group of senior citizens from different cities and regions of Spain. Like many others, the movement started during the first months of life of the 15-M movement, in Barcelona.
I think this is a very interesting project that is intended to pay hommage by showcasing portraits of survivors of the Cuban revolution. They are displayed in the streets of Havana and, as the artists explains, this is a place that lacks commercial advertising/ billboards in the streets. So they are displaying the courage and strength of those, people who should be admired, earned their place in a sense.