During the 15M camp in Madrid, thousand of banners were produced, when the camp was been dismantle a group of archivist and librarians did manage to rescue a large collection of that material and store it in one of Madrid´s squatted social center.
In collaboration with the Archivo 15M, a digitalization of an estimate of 4000 banners was carried out, that were placed at Madrid´s occupied Puerta del Sol square in 2011.
The collection of banners show how images and language was configure around the 15M Occupation in Madrid, and how those configurations were responding to the economic crisis of 2008.
Banners were photographed in a squatted social center, together with the activist archiving working group Archivo15M, that restores and takes care of these documents.
You can follow the work of Archivo15M on their site: https://archivosol15m.wordpress.com/