Dumbledore's Army comes to my mind.
back
3 comments
This makes me feel old, because the first thing that came to my mind was Kiss Army.
Also Dad's Army http://en.wikipedia.org/wiki/Home_Guard_(United_Kingdom)
Freedom fighter
Freedom fighter is a synonym for terrorist, so that'd have some unfortunate effects.
More of an antonym really but you're right that the meaning of the phrase is a little confused these days.
I thought it was an homage to Dumbledore's Army, didn't occur to me it could be anything else.