A key concept in 饭圈 (fandom culture). 黑粉 are organized - they actively work to damage a celebrity's reputation, spread rumors, and tank ratings. Rival fandoms often accuse each other of deploying 黑粉.
usage
Related terms: 粉丝 (fan), 真爱粉 (devoted fan), 路人粉 (casual fan), 脑残粉 (obsessive/crazy fan), 黑粉 (anti-fan). 黑 as a verb: 黑他 = to hate on him.
