Our general rule is to move posts away, typically to
Politics - Quarantine Thread or
Snippiness 2.0. However, some posts need to be deleted, for instance if they threaten harm against a person/doxx/include racist or xenophobic language, etc., and those are going to be hidden forever.
On other forums I've frequented, deletion is the more common practice, so even if we're not 100%, I find that it's much more transparent here. There is one hiccup that is keeping at least one moderator from moving posts away and forcing them to delete, so I'll see if I can address that with the admins to better facilitate this transparency.