I've been subbing to Claude for 2 years and somehow the questions of whatever happened in Tiananmen (I know already anyway) have never once came up, but Claude (especially Fable) is now famous for refusing to work on things people want. And even pushed back against me when I was doing asking to research some people famous (infamous) in Israel-Palestine conflict. I really don't get why these "chinese gotchas" are keep coming up in every thread, they are mostly entirely inconsequential to getting actual work stuff done while same can't be said about Fable or others. Once, Gemini refused to help me make an infographic about women in STEM because the specific woman I was doing research about has died a few years ago, other models had no such qualms. All these "gotchas" are quite arbitrary.

So for your Tiananmen questions go to Fable, and for the Fable-nerfed subject matter go to Kimi (or GLM, as Hugging Face were forced to do when they were recently hacked and the nerfed US models refused to analyze it).