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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.
Trigger: Record surge in DMCA takedown notices from rightsholders and Reddit's escalated enforcement of its repeat-infringer policy
Trigger: Reddit's own framing, from its July–December 2025 transparency report: "Reddit bans user accounts that repeatedly violate our Copyright Policy. Reddit may also ban subreddits after multiple removals of violative content or where it is clear that the subreddit is dedicated to sharing violative content."