This 23rd April, like every year, Barcelona has filled with books and roses for Sant Jordi (Saint George's Day), but with a difference: solidarity with the political prisoners and grievances against article 155 of the Spanish Constitution have also filled the city with the colour yellow on a day when there are more dragons to fight against than ever.
Below, we've picked out a selection of images of the day in the centre of Barcelona:
Photos by Sergi Alcàzar