Is this someone who campaigns for human rights for the people you disapprove of or disagree with?

That's my best guess, but I'm still confused. I generally parse "human rights" as "good thing", I'm not sure what people are scared of when they think it's a "bad thing". My best interpretation is what you said, thinking of human rights as a fluffy idealistic idea which is counterproductive in the real world, which I can understand, even though I vehemently disagree...