I think it's not fascism to refuse to work with/for people whose polics are aimed at concretely restricting your civil liberties, in a way that might have affected your day-to-day life for the rest of your life.
I genuinely think that it's objectively correct that some minority must not be banned from being able to marry. I really don't think you can spin that into fascism.
To put it more drastically, just because someone dares to stand up to their oppressors, they are not immediately oppressing anyone themselves.
There are few any large set of people actually agree on
gun control, prayer in schools/government, searches by the government/TSA/whatever
There is a lot of subjective disagreement over exactly what liberties exist, and their limits.
As the parent said, if you really think you have an objectively correct view of what civil liberties are, and other folks are just wrong, ....