Complex sentence: Some feminists view SM as an ideal feminist expression of sexual freedom while other feminists say that BDSM, and more particularly SM, reinforce patriarchy and that these practices are contradictory to feminism.
Split into simpler sentences: Some feminists view SM as an ideal feminist expression of sexual freedom. However, other feminists say that BDSM, specifically SM, reinforce patriarchy and that the practices are contradictory to feminism.