I have been uploading comic art images by Moebius for several weeks almost daily to the !eurographicnovels@lemm.ee community, where I´m a moderator myself. All those images have disappeared. Modlog says the images have been deleted by "admin". Modlog gives no reason for this but says the images were later restored by "admin" but that is not true. All my comic art posts have been destroyed and are empty posts now. I was not even contacted a single time about this and honestly can´t think of a reason because I had uploaded exclusively "safe for work" and apolitical material. We are trying to build a community for european graphic novels like "Tintin", "Lucky Luke" and "The Incal" and I put a lot of love in those posts because I want to help make our community interesting and grow. However - I have been stongly discouraged to contribute content now that I have seen it gets arbitrarily wiped by anonymus admins. How can I find out what happened, who deleted my stuff and why they did so? How can I avoid this happeing to my posts in the future?
Maybe there was a DCMA takedown request?
Don´t think so, those where all freely available and old images
They are well within copyright in terms of timeline. Anything after 1927 can and likely is subject to copyright. I don't like it but that's how it works. Given that they are images from trading cards, it would not surprise me if the rights holder was enforcing copyright through a third party service.
That might be the case but is of course pure speculation. I would like to know the official reason though.