@belmontzar
Usually, just saying “Rule #foo” is sufficient, for example if something is deleted for Rule #6 that means it was off topic or the poster was abusing site functionality (for example, ban evading, sock-puppeting, or spamming, etc), and Rule #0 usually means there was some for of name-calling or ad hominem in the post.
And, please do note that replying to an off-topic discussion on an image is still off-topic. This can especially be a problem on any kind of politically-themed images.
However, if the deletion reason wasn’t clear, or if you have questions about moderation, or if want to appeal a deletion, you are always welcome in our Support channel on Discord, or in our -help channel in IRC. The links are available on the Contact page at the bottom of each page.
Please note, asking why a comment was deleted on an image, by posting on the image itself, is very off topic. We really do ask that people not have meta discussions about moderation on fan art - it’s really not fair to the artists if the comments on their images get derailed by subjects that have nothing to do with their art.