That policy never applied to ethnic groups, so the idea that the chinese government is trying to imprison ethnic groups to "re-educate" them is hard to believe
Concerning the MI6 story, it's not a conspiracy, when you share that kind of classified, military, materials with the public, your intent is not the truth, it's always manipulation, specially when the videos are always blurry, in the age of HD content, it's kinda fishy, maybe they want to obfuscate the imperfections, it gives me similar Colin Powell vibes
https://www.pbs.org/wgbh/frontline/article/colin-powell-u-n-...