In both ends of the spectrum, but particularly in radical feminists, theories are influenced by ideologies and politics, hurting society at large.
Recently, a feminist(president of a feminist university group) told me males were incomplete females(XY would be an incomplete version of XX) and, for that reason, they should have their instincts and behaviour suppressed.
Edit: As some have mentioned, the girl referred to the SCUM manifest http://www.womynkind.org/scum.htm