Is 60 years long enough for a Holocaust movie? I'm sure some survivors are still fucking haunted by that shit(and why wouldn't they?)
Besides DC, you're pissed, angry, emotional, so I'll leave you alone.
But Five Years is your criteria?
Again, using your logic, I do remember a pretty damn offensive SUPERMAN cartoon short of the time, where the Blue Bomber went off and beat up some yellow monster-looking Japanese(called "JapaNazis"

). Really, the studio behind this cartoon made a fucking profit off of our pissed-anger from the Pearl Harbor bombings. I'm sure some kid cried out in Indiana.
Better yet, what about all those Frank Capra-directed documentaries(aka Propaganda) that the U.S. Government used, with footage of Pearl Harbor and other scenes of dead Americans on the sands in the islands of the Pacific Ocean, to re-enforce us Americans that the Japanese must be stopped. I mean, people still PAID to see those docs in theaters. KA-CHING!
Maybe, like DoubleJ, I view history as that of millions of years for the human race on Earth, and really, this moment only represents 3 seconds total in the grand scheme of things. Our lifetimes is just a grain of sand.
Besides, this "mellowing" of time? What about the absolutely angry families of the killed Israeli athletes in the 1972 Olympics, plus their relatives and fellow countrymen, that were pissed about Spielberg's perspective dramatic take on the aftermath in MUNICH?
People will always be hurt inside DC, and you know that. Mellow of time my ass. However, the only two things I hope about Greengrass' 9/11 movie are:
(1) Is it a sincere drama that honored people for trying to fight the hijackers themselves, or a cheap money-making scheme of a melodrama?
(2) Will it be a decent movie, or garbage?