In fact my history lessons as a kid in the U.K. never touched on the British tactic of flooding China with opium to weaken the nation ; and both my nephews in their 20’s and another whose teenager confirm that was the case in their schools too . I agree there are some people of conscience who speak truth but mostly people do not as they know they will be bullied, harassed, lose their jobthey are very likely to be punished eg losing their jobs. There are thousands of out of court settlements, that go unreported/rema under the radar… We only hear of the very rre cases where someone is being charged by police eg Katherine Gun for acting with integrity, harassed and hounded eg Julian Assante almost to death … these are just examples off the top of my head … the difference is one of degree and not kind, when one is a dissident in the so-called democratic West and other nations which the Western elites like to portray as repressive regimes.