I attended an audience testing screener for Idiocracy before the film's final edit. I could not believe my eyes and ears, I loved it unlike anything I'd seen before, it was the hardest US culture satire I'd seen up to that point. Then the lights came up and the audience started giving their reviews, in an open mike fashion. They all identified with the "idiots" and were indignant insulted, and angry. I remember making eye contact with Mike Judge like "WTF!" It was an early screener and I think that reaction was a surprise to the film team. I own a copy and watch it more than once a year. One of my favorite hard satires.
It breaks my heart when I hear people outraged about Onion stories, not because that they fall for them, but because they know they have a hard time telling truth from fiction.