Individualist or libertarian feminism is sometimes grouped as one of many branches of feminism with historical roots in liberal feminism, but tends to diverge significantly from mainstream liberal feminism on many issues. For example, "libertarian feminism does not require social measures to reduce material inequality; in fact, it opposes such measures [...] in contrast, liberal feminism may support such requirements and egalitarian versions of feminism insist on them." Unlike many libertarian feminists, mainstream liberal feminists oppose prostitution; for example the mainstream liberal Norwegian Association for Women's Rights supports the ban on buying sexual services.