@CobaltVelvet I... oh, crap. On an instance level I have NO idea.
On an individual level, I'd ask for the following to be CW'd: anything nsfw, graphic depictions of violence, sexual or otherwise. Descriptions and depictions of structural oppression (‘-isms’) that are graphic and detailed and likely to bring up trauma.
As a courtesy, I tag current events that I perceive as sufficiently traumatizing — normally related to the above.
Putting this as a policy brings up *so* many edge cases tho...