Sexism and racism is inherently linked to power, in such a way that women can't (really) be sexist towards men, and black people can't (really) be racist towards white people.
Yes there are exceptions, I don't want someone to bring up some 3,000 year old civilization that was dominated by black people where they had more privilege.
Racism and sexism are inherently a privilege issue, you can bring up all the cases you want of hate crimes against men from extremists or hate crimes against white people from black people - but it's not racism.
It's discrimination.
If you want to make a case against this then you can prove that women have more privilege than men, or that black people have more privilege than white people.
Maybe it's sad to say that this is primarily the american scope that I'm speaking of, I'm an american so I'm more in tune with american politics and the racial scope in this area.
Discuss.