I'm into some pretty big fandoms where people are harrassed for just liking what they like. What are your fandoms with a bad community? My biggest is My Hero Academia
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Gacha. Most of our fandom hates those who make this kids game into something NSFW. We call these people gacha heaters, and they are not welcome by most of the fandom.
Oh my god yes! I'm actually active in the gacha community myself. I was hoping someone would say this!