It is possible - necessary - to decry both sexism and racism without playing one oppression off against another. When I see that "my oppression is WAY worse than yours," attack, it steals focus from the clearly correct points about sexism and gets me wondering instead about the level of prejudice in the person making the assertion.  When Jewish relatives and neighbors of my parents' generation invoked pogroms and the Holocaust as an excuse to trivialize the suffering of black people in America, I didn't hear lamenting of oppression, but racism. And yes, "black men got the vote 50 years before white women" IS a trivialization, because it conveniently ignores how white America's invention of mass incarceration as a workaround to the 13th amendment was  a way of continuing disenfranchisement (which continues to this day through ongoing efforts to roll back civil rights). Racism and sexism have been America's default setting from the start. They should be regarded as the common enemy.