I don't like rules and I don't like legalese so I'll be both brief and informal.
NSFW content should be marked as sensitive. If it isn't, it will be removed. Users get three warnings then a week-long suspension. After that, it's up to the admins how to proceed - it may result in a longer suspension or even a ban. After you upload an image, there will be a button with an eye on it at the bottom of the compose pane. Use it. Same goes for gore or graphic violence.
Content that is illegal in the US or Germany is explicitly disallowed and may result in a permanent ban. This includes but is not limited to child pornography, national socialism, Holocaust denial, or Nazi symbolism.
"Being a jerk" includes but is not limited to:
1. Stalking or harassing users
2. Impeding others from using the service
3. Degrading the performance of my server
4. Doxxing anyone
5. Inciting others to do anything listed above
Users get three warnings then a week-long suspension. After that, it's up to the admins how to proceed - it may result in a longer suspension or even a ban.
Note: any instance launched by Alphabet, Apple, Facebook, Microsoft, Elsevier, the Internet Archive, or any of their subsidiaries will be immediately suspended. These companies have proven themselves untrustworthy with their EEE and "archive first, ask permission later" tactics.