Even if we accept her premise that Clara Zetkin deserves credit for Women's History Month (despite it becoming a thing half a century after her death and despite the fact that the first (non-international) Women's Day was organized by a different woman in New York City), how is a German anti-Nazi politician not a nice white woman? She's clearly white and opposing Nazis is generally considered a normal, nice thing to do. It's not like she was brawling against the SA in the streets or sabotaging factories or anything, she was, by most standards, a nice, white (she was actually a German communist and feminist who wasn't Jewish!) woman.