It has already happened [1].

>"In the summer of 2019, as pro-democracy protests raged throughout Hong Kong, U.S. employees of TikTok were horrified to discover that content moderators on the global team, who reported to TikTok managers in China, were taking down videos of the demonstrations, according to a person involved in the discussions.

[1] https://www.theinformation.com/articles/tiktok-wants-to-avoi...