LA CASQUERÍA (tripe and offal shop) is in a market,

a traditional market in Lavapiés, a centric and historic neighborhood in Madrid. It's history is a story of resistence.
LA CASQUERIA, and others, are fighting against gentrification and the turning of old centric Spanish neighborhoods and markets into tourism.

They just sell books by weight

But they fight for free culture against market rules,
for reusing and recyling against planned obsolescence,
for community project against just making money