If you've never heard of Helios Gomez, neither had I.

Helios was a revolutionary who fought against Franco both as a soldier and as an artist. Most of the pictures by which posterity will know him were published as anti-fascist propaganda, but his true legacy is lovingly remembered by the Associació Cultural Helios Gómez.
I only heard of Helios through an interview with Damian Le Bas by Clare-Marie Grigg, editor of Impirica. Damian himself is editor of Travellers' Times as well as being a poet. I hope he won't mind my saying that you couldn't find a better introduction to him than Clare-Marie's interview and his own poem and video, Belong.