Toward the end of the 1970s, much of the discourse in the feminist movement shifted from the discussion of lesbian feminism to focus on the new topic of sexuality. One of the primary concerns with sexuality was the issue of pornography, which caused a great divide among feminists. The two recognized sides of the debate were anti-pornography feminism and "pro-sex" feminism. One of the major influences of anti-pornography feminism was its predecessor, lesbian feminism. Anti-pornography movements developed from fundamental arguments displayed by lesbianism, such as the notion of patriarchal sexual relations. Ellen Willis described these relations as being "based on male power backed by force." From this perspective, pornography is created exclusively for men by men and is a direct reflection of the man-dominant paradigm surrounding sexual relations. Another idea taken from lesbian feminism by anti-pornography groups was that sexuality is about creating a compassionate bond and a lasting relation with another person, contrary to the belief of the purely physical nature of sex.