If we make a hypothesis that one of the "blocks" in society is preventing the interests of the vast majority of people, there is indeed no relative evidence and legitimate charges to remove that block. Then only the "illegal" is cleared out. So that the truth, the vast majority of people who benefit from it, don't care too much. Even if there is, it will be covered up by the historical authorities.
Let’s take a small example first: the anti-narcotics police have been following a drug lord who has been stalking for several years, and has confirmed that he is selling drugs, but because his gang is too cunning, there is still no evidence to completely close the net. However, at this time, I received reliable news that they are carrying out a large order, and a large number of drugs will soon flow into the country, which will greatly harm the society. At this time, another measure had to be taken: first frame the control, and then force the inquiry to find the real evidence. For example, detain their gang vehicles at checkpoints, throw the prepared drugs into the carriage, and then search them out, claiming that these drugs are evidence, and then control the criminal gangs.
Another American example, the assassination of Kennedy.
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