More than 30 terabytes of rough material were shot for the documentary.
Took 5 years to shot, and another 2 and a half of editing and reediting. Some of the central characters still being prosecuted in 2021, so the process of finishing the movie kept getting longer. This gave the filmmakers the opportunity to refine the final edit of the film while assisting to the near 50 presentations with public in Universities, Movie Festivals and several Antifa Squad Houses around Spain between 2018 and 2020, and taking notes of the audiences reactions from the back seat and reediting depending on those reactions.
Up to 9 complete concerts were shot with at least 8 cameras, in order to have a big playlist from which to choose the most adequate songs to punctuate every thematic part of the movie.
In 2021, Spain has 14 rappers with prison sentences for the contents of their lyrics. An absolute and shameful world record.