dansade en sommar (She Danced One Summer AKA One Summer of Happiness) displayed explicit nudity, including bathing in a lake. This film, as well as Bergman's Sommaren med Monika (The Summer with Monika, 1951) and Tystnaden (The Silence, 1963), caused an international uproar, not least in the United States, where the films were charged with violating standards of decency. Vilgot Sjöman's film I Am Curious (Yellow), also was very popular in the United States. Another of his films, 491, highlighted homosexuality. Kärlekens språk (The Language of Love) was an informative documentary about sex and sexual techniques that featured the first real act of sex in a mainstream film. From these films, the myth of "Swedish sin" (licentiousness and seductive nudity) arose. The image of "hot love and cold people" emerged, with sexual liberalism seen as part of the modernization process that, by breaking down traditional borders, would lead to the emancipation of natural forces and desires. In Sweden and nearby countries at the time, these films, by virtue of being made by directors who had established themselves as leading names in their generation, helped delegitimize the idea of habitually demanding that films should avoid overtly sexual subject matter. The films eventually progressed the public's attitude toward sex, especially in Sweden and other northern European countries, which today tend to be more sexually liberal than others. Normalization of pornography The somewhat more open and commercial circulation of pornography was a new phenomenon. Pornography operated as a form of "cultural critique" insofar as it transgresses societal conventions. Manuel Castells claims that the online communities, which emerged (from the 1980s) around early bulletin-board systems, originated from the ranks of those who had been part of the counterculture movements and alternative way of life emerging out of the sexual revolution. Lynn Hunt points out that early modern "pornography" (18th century) is marked by a "preponderance of female narrators", that the women were portrayed as independent, determined, financially successful (though not always socially successful and recognized) and scornful of the new ideals of female virtue and domesticity, and not objectification of women's bodies as many view pornography today. The sexual revolution was not unprecedented in identifying sex as a site of political potential and social culture. It was suggested that the interchangeability of bodies within pornography had radical implications for the meaning of gender differences, roles and norms. In 1971 Playboy stopped airbrushing pubic hair