You'd be hard-pushed to find a sadder story than that of the overthrow Salvador Allende's Popular Unity government in the 1970s by a US-funded fascist coup and the subsequent repression of Chile's population.
I recently had the privilege to meet a survivor of Pinochet's coup. I guy called Ricardo who was imprisoned by the fascists who was able to offer a first-hand insight into what Chile was like at the time of the Popular Unity Government. The story of Allende's government show that participation in the existing democracies can be used to make non-violent revolutionary reforms to a society however such a peaceful path leaves those who concentrate on welfare for the poor open to violent retribution from those seeking to make a profit from pain and suffering. The story perhaps leaves us to trust the methods used by the Cubans in their revolution which has been much more successful and long-lasting.
This republication of a British comic from the time immediately after the coup in Chile presents an easily digestible telling of the tale and barely seems dated apart from all the solidarity from the British miners (who were eliminated by another supporter of fascism in Chile).