Morgan famously walked off "The Tonight Show" in 1969 when it screened vintage footage of her as a child actor while she was trying to speak seriously about the first national march against rape. Of the incident, she has been quoted as saying: "Imagine talking about such a subject and having it trivialized like that." In 1974, with her phrase "Pornography is the theory, and rape is the practice" (from her essay "Theory and Practice: Pornography and Rape"), she became a central figure on one of the divisive issues in feminism, particularly among anti-pornography feminists in Anglophone countries.