This happened to me three times in a row on Claude after sending it a string of emojis telling the life story of Rick Astley. I think it triggers when it tries to quote the lyrics, because they are copyright? Who knows?

"Claude is unable to respond to this request, which appears to violate our Usage Policy. Please start a new chat."

> We remain highly uncertain about the potential moral status of Claude and other LLMs, now or in the future.

That's nice, but I think they should be more certain sooner than later.