I think it’d be good to put a few guidelines in place to shape the discussion away from the lowest common denominator. Even the very basics of asking posters to describe why they liked the photograph enough to post it is a nice, gentle nudge in the direction you’re describing.

I think it’s worth pointing out that legality depends on jurisdiction and while it’s obviously a requirement to obey the your (and other admins’) local laws, it’s not quite so clear-cut when it comes to other countries.

Eg. It’s illegal to criticize Hong Kong’s government under their National Security Law. But I think we’d (the community here, not just you and me) agree that lemmy.world has absolutely no obligation to follow that law.

I think it’s more likely to be history homework for a North American school completed by an immigrant from HK/Taiwan.