Complex sentence: The anti-rape movement came about in the late 1960s and early 1970s, when a new conceptualization of rape arose out of the second-wave of feminism began a reevaluation of women's daily lives socially and with regard to the societal institutions with which they interact.
Split into simpler sentences: The anti-rape movement came about in the late 1960s and early 1970s, when a new conceptualization of rape arose out of the second-wave of feminism. Feminist began, a reevaluation of women's daily lives socially and with regard to the societal institutions with which they interact.