The new Prime Video show Swarm, a thriller executive produced by playwright Janine Nabers and Donald Glover, explores the darker side of fan culture: Dominique Fishback plays Dre, a stan of the world’s biggest pop star (wink-wink, nudge-nudge: she’s a “killer bee” in the singer’s “hive”) whose single-minded obsession leaves her with blood on her hands. The show is fictional but draws its horror from our collective fear of being on the wrong side of all sorts of fandoms. Here, we’ve collected eight stories about things done in the name of allegiances to everyone from Queen Bey to rappers and entire football teams.