There have been discussions on HN before about political issues that are censored by Chinese LLMs. This video covers some of those, but he also gives examples of technical and coding-related topics that are blocked by DeepSeek.
These problems seem to be limited to the Deepseek provided web app. I have tried multiple of them with the open weights you can download from huggingface and none have shown up. The model responds as I would expect it to