You're probably right.
I respond very strongly to tragedies based in the history of the early 20th century. I hold the late 19th century as one of the highest points in all of human culture; even higher than Golden Age Greece in many regards. There was a hope and optimism blooming that had never before been possible, or believed possible. It was like all of the most beautiful fairy tales were coming to life in the industrialized world (regardless of the way it is depicted today). Then it all changed, and it changed so hard and fast that no one understood (don't understand to this day) why or how it could all go to hell so completely and so brutally. It was Mahler's 9th in real time. One moment Einstein was expounding relativity, the next moment, swastikas were covering Europe. It's the emotional palette that Tolkien worked from, but he separated his story from the history so that it could stand on its own. Pan's Labyrinth is set fully in that history, so it hits me much harder. The emotional impact is more acute because it's that much more real to me, being as heavily invested in that time period as I am.