I generally use 'fed' as behavior that blackens the name of a place.

I'm just kidding him, I don't actually think he's a fed. Not only does he always strictly denounce violence, but he does his absolute best to follow the rules to the best of his ability (which unfortunately is not perfect), especially on Reddit where he knew it would be even more trouble for the place than here.

Moreover, if you're actually a fed, you'd start hating on Jews and blacks, not women.