Un-American can act as an adjective, adverb, and pro-noun. Often simultaneously and in a single sentence, such as: I don't have to listen to your Un-American crap you Un-American loving Un-American. I'm going to get my lynch mob together.
Both "Un" and "American" should always be capitalized.
Who are the modern purporters of such sentiments? France, Communists, and all of those "tax-hiking, government-expanding, latte-drinking, sushi-eating, Volvo-driving, New York Times-reading, Cthulhu-worshipping, body piercing, Hollywood-loving, left-wing freaks".
List of Prominent Un-Americans
This black dude, what has he ever done for us anyway?
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