It was an unlikely trending topic, but it served as a high-profile digital example of one of feminism's most enduring internecine tensions - how or whether to make space in the world of feminism for people who aren't white (or upper middle class or straight or able-bodied). If you were on Twitter last week, you may have seen a lot of rallying around the satirical but serious hashtag # solidarityisforwhitewomen (which itself spawned another trending hashtag #blackpowerisforblackmen). But it's a great forum for catharsis and taking the temperature of a popular sentiment. Twitter isn't always the best place for big, thorny philosophical conversations. The hashtag #solidarityisforwhitewomen became an unlikely trending topic on Twitter.