After following discussion about pool #30860 in the lore tag thread, I'd like to propose a "dehumanization" tag (or "depersonalization" as a furry-inclusive equivalent). I believe such a tag would also be useful for sapient-to-nonsapient transformations.
The main question is if this is distinct enough from degradation and humiliation. I believe the fact that the user in the above thread was unpleasantly surprised by the pool's content despite enjoying petplay warrants a separate tag, but it may be too specific.
A related topic is cultural genocide, which is also depicted in "Decline of the Feline". The genocide tag is currently only used for violent genocide, and only for 13 posts at that. I've probationally added the tag to relevant posts in "Decline of the Feline", but that may be considered inappropriate for people looking for/avoiding genocide content. That said, cultural genocide seems such a niche topic I doubt a separate tag is warranted.
Edited to add: I wasn't aware when I wrote this that cruelty and suffering are extant tags. They may be sufficient for individuals suffering dehumanization, but cultural genocide remains an open question. Something like "mass suffering" may be warranted, though I believe that's a poor name ("mass" could be interpreted as anything from a small group to an entire world, which is uselessly broad).
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