Say a Trump-friendly group of owners bought TikTok , and wanted to change the way TikTok worked — so it showed more stuff that was Trump-friendly, and less that wasn't. How would they go about doing that? I'm no engineer, but I would think that would be a pretty difficult project. You'd need to do it pretty subtly, over an extended time period, so people wouldn't notice it right away. Right? Wrong, say some people who use TikTok. They point to Sunday, when TikTok stopped showing anything