A lot of feminist say that sexism against men is impossible because women have lacked the power to discriminate against men but this is not accurate when other factors are taken into account. In the deep south, from era of reconstruction after the civil war to the mid 1960s, black men faced lynching based on often false rape accusations of white women, in most of these cases the only witness was the white women herself and they fully participated in the torture and lynchings of black men(shooting them, cutting off their ears, burning them, ect).
This is a prime example of systemic sexism and racism against men with women sharing a role as the perpetrators, these men were often powerless in the face of an angry mob wanting revenge for the violation of a white woman. Many white women took advantage of the negative racial/gender stereotypes of black men as violent, inherent rapist while on the opposite end white women were idealized as pure, beautiful, and morally upright. I was reading one feminist blog where she(the feminist) did a kind of historical revisionism to absolve the responsibility and agency of white women's roles in racism(and sexism), even going so far as to claim that the white women who initiated the lynchings were victims too, I thought that was really sick, especially coming from someone who claims to be fighting against all oppression.