Science fiction fandom other groups including LGBT communities, libertarians, neo-pagans, and space activist groups like the L5 Society, among many others. Some groups exist almost entirely within fandom but are distinct and cohesive subcultures in their own rights, such as filkers, costumers, and convention runners (sometimes called "SMOFs"). Fandom encompasses subsets of fans that are principally interested in a single writer or subgenre, such as Tolkien fandom, and ("Trekkies"). Even short-lived television series may have dedicated followings, such as the fans of Joss Whedon's "Firefly" television series and movie "Serenity", known as Browncoats. Participation in science fiction fandom often overlaps with other similar
Joss Whedon mocking and objectifying Kidman's physical appearance. That same month, Whedon also received criticism for reportedly comparing Ivanka Trump to a dog. Referring to Trump's husband Jared Kushner and Trump, he tweeted: "He's a Voldemort in training, & unlike the Pekingese he married under, can play the long game." Whedon stated that he had been referring to Donald Trump. Whedon has written, directed and produced a number of films and television series. Joss Whedon Joseph Hill Whedon (; born June 23, 1964) is an American screenwriter, director, producer, comic book writer, and composer. He is the founder of Mutant Enemy Productions