Feminists in this sub often claim that feminism is not a monolith in order to distance themselves from the unpopular elements of the movement. Some claim that intersectionality makes feminism more inclusive by including race, sexual orientation, etc. into the equation. This sounds good in theory, but I argue that in practice, the adoption of intersectional feminism actually narrows down acceptable views within the movement. Here is an nymag coverage of what recently happened in academic feminist philosophy:

http://nymag.com/daily/intelligencer/2017/05/transracialism-article-controversy.html?mid=twitter-share-di

TLDR: A female philosopher submitted an article in defense of transracialism to a feminist philosophy journal. The article is pro-transgender and pro-transracial. However, a lot of other academics staged an open letter campaign against the author on the grounds that her work is not "intersectional" enough. The journal caved in and issued an apology.

Here is Brian Leiter's support for the author (although I disagree with him that anyone should be sued for defamation):

http://leiterreports.typepad.com/

This is not a one-off event, nor is it limited to feminism. Movements in the left have been subjected to these purity tests a lot recently in the name of intersectionality.