A map showing sites in Barcelona with some reference to the history of the city. Many of the sites refer to industrial unrest, the civil war and the repression and resistance during the dictatorship. I recommend you have a walk along this route.
I put it together because I wanted to see how they played out on a map. More sites will be added soon.
iberianature.com/barcelona/history-of-barcelona/historical-memory-map-of-barcelona/