I vote Option 3.
Both SJW's and the Alt-Right tend to be young and usually female.
Both groups are concerned about the concentration of media in a few large corporations, resulting in many important stories being overlooked (though they may disagree on what is an important story, as well as the interpretation of these stories).
Both groups, at least from what I have seen/heard, have a significant undercurrent of (or at least are associated with) an anti-Israel and/or anti-Semitic lean.
Both groups preferred Sanders to Clinton in the Dem primaries.
What? I thought the alt-right was very much stereotypically male...
The number of female alt-righters is growing. Most are focused on anti-feminism.