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Tracker
The major coordinated mass removals in Reddit's history — what triggered each, the policy change behind it, and the communities it swept away. Each wave links to the affected subreddits in the banned database.
Trigger: Sustained, off-platform harassment campaigns run out of a handful of large 'hate' subreddits, most prominently r/fatpeoplehate, which had grown to roughly 150,000 subscribers.
Trigger: Continued operation of an interlinked network of overtly racist subreddits, the so-called 'Chimpire,' centered on r/CoonTown, after the June anti-harassment wave.
Trigger: Repeated posting of personal and confidential information in r/altright, including efforts to identify the person who punched white-nationalist figure Richard Spencer on inauguration day.
Trigger: Pressure following the August 2017 Charlottesville 'Unite the Right' rally and the killing of Heather Heyer, plus vague existing rules that admins said were 'too vague' to enforce against violence-glorifying communities.
Trigger: Long-running internal debate over a 'direct dealing' rule, accelerated after the February 2018 Stoneman Douglas (Parkland) school shooting renewed pressure to stop firearms trading on the platform.
Trigger: Months of violent threats, harassment, and posting of personal information across QAnon conspiracy subreddits, headlined by r/greatawakening, which had grown past 70,000 subscribers.
Trigger: Users sharing first-person footage of the Christchurch mosque shooting, in which 51 people were killed, to graphic-death and gore subreddits within hours of the livestreamed attack.
Trigger: Mounting pressure during the George Floyd protests and a broader reckoning over platform tolerance of hate, with r/The_Donald long cited as a persistent rule-breaker despite a prior quarantine.
Trigger: A platform-wide moderator protest ('r/VaxxHappened' blackout) demanding action on COVID-19 misinformation, with r/NoNewNormal identified as the source of roughly 80 brigades against mainstream-COVID communities in the prior 30 days.