Bad types of gatekeeping

Bad types of gatekeeping is e.g. sorta randomly alienating new users of 
a video game. Ultimately, bad types of gatekeeping are what ruins a community.
Many do not know this, but high school bullying is about gatekeeping. Who has access to what, who gets to be whose friend,.
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Exclusion; Bullying; Malevolent gatekeeping; Domination; Ruling