I appreciate your opinion, but mine is that it was snubbed. Not that it matters. The impact that it made on me was great, as was the impact that other more "accepted" films have.
The academy need to get their heads out of their collective rumps, and look at a movie for what it is artistically, and put their liberal politics aside.
They have picked some amazing winners over the years. Some that stand out are "Marty", "The Best Years of our Lives", "Casablanca", "Rainman". amd "Schlinder's List"...films that had meaning.
Then you have films such as "American Beauty" and "Silence of the Lambs" in the latter years. Kind of shows you what direction the academy, and Hollywood in general, is going.
The Best Picture Winners over the years tend to be fairly conservative with an exception here and there (American Beauty). Look over a list. Do yout think anything less then a Best Pic nomination is a snub? It wasn't case a of politics but a case of 5 other movies getting more votes. My two favorite films of last year weren't nominated either. I don't attribute this to conspiracies. :-)