Trans-Exclusionary Radical Feminism, or TERF, is a loosely-organized collective with a message of hate and exclusion against transgender women in particular. They have attached themselves to radical feminism as a means to attempt to deny trans women basic access to health care, women's groups, restroom facilities, and more.
I have developed a hate/love relationship (yes, in that sequence) with the term microaggressions. I hate it because of the negative effects created by these small events. But I must confess that I love the fact that the term makes visible and real the experiences so many of us have endured because of being perceived different.