r/masskillers

60K archived posts · Mar 2018 – Sep 2026

MassKillers

r/masskillers

A subreddit centered on the phenomenon of mass murder and the perpetrators who commit them, their motivations, crimes and the psychology of these individuals. This subreddit is not meant to glorify mass killers, but rather to discuss and attempt to understand their behavior. A mass killer is defined as one person who kills 3 or more individuals arbitrarily in a contained population at a single point in time. This includes mass shooters, bombers, terrorists, and family annihilators.

Created Mar 24, 2018

195KMembers (last snapshot)

60KArchived posts

Rules:

You must be 18+ to participate in r/masskillers. All rules apply to comments and posts.

Posts must reference mass killers/mass murderers - or "spree killers". A mass killer is defined as a single individual who commits a crime such that 3 or more individuals are killed in a short period of time, usually in the same physical space. Individuals who attempt a mass murder are also allowed.
Do not glorify mass killers/mass murderers. The purpose of this sub is to discuss the crimes, psychology, and motivations of people who have committed mass killings, not to glorify them. This includes having profile pictures with references to mass murderers or offensive usernames.
Do not share links to the Christchurch or the Halle livestreams or ask for them in any way.
No inappropriate humor, eg politically motivated or otherwise.
No memes. Gifs without informational content will be rejected.
No political posts. Do not post articles related to political causes such as for/against gun-control legislation, political affiliation, etc.
No conspiracy posts. Do not post content related to conspiracies around occurrences of mass killers.
No racism. Racism will not be tolerated.
You must be mature and responsible when using this sub. We do not allow minors to participate.
Do not refer to the number of victims of a mass murder as a "high score". Doing so violates our no glorification rule.
No Spam. Do not repeatedly make low effort posts or otherwise spam the subreddit.
No Advertising. Do not advertise for your own projects unless given permission by the moderators.
No Personally Identifiable Information. Do not post personally identifying information.
No misinformation (and/or disinformation). Do not post false or misleading statements related to a mass killing.

Violations of these rules will result in a permanent ban. Exercise discretion.

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