A forum, chat or discord mod who abuses their power. This is usually done by inconsistently targeting and singling out users that said moderator does not like or post they disagree with, all the while feigning that they are fair and impartial. Forum mods are generally cowards and will use the umbrella term such as "low effort", "trolling" or "Break of forum policy" as their reasoning for removal of users post or banning of a user. If said user ask a mod for more specific reason, they often do not answer or if they are really vindictive might insult said user or say refer to forum rules. Generally, these mods get off on feeling powerful and since they don't answer to anyone can get away with their behavior.
Example of Mod abuse
Poster 1: Makes a detailed post on say reddit highlighting why they are against Aragon being reimagined as a black man.
Forum mod: Deletes post and makes up some bs that it is "low effort"
Poster 1: Ask forum mod for an explanation. (Gets no reply)
5 minutes later
Poster 1 Banned from subreddit.