So, the nice lady in the photo was saying that if feminism doesn't have other related thingies, it becomes white supremacy?
'White Supremacy' is everything. Math, Christmas, Trump supporters, being able to speak and read English, living a middle class clean life with no felonies, holding down a job for decades, the flag, the anthem, everything normal, honorable, and clean, is White Supremacy.
BTW, I have heard that term White Supremacy used against people of all races, including Black people. If you look too good. If you speak and read too well. If you hold a good job and show up to work everyday. If you live an honest clean life, then you, my friend, are a White Supremacist. And it does not matter what race you are.
White Supremacy as the Leftist define it is about a lifestyle. It is about the things you honor and the way you live. It is not about race to them.