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I dont think so. Undeniably some have but certainly not "most" let alone "all." The military has a LONG history of manipulating scientists who thought the purposes were for peaceful research into much more insidious areas. If I started quoting all of the ones I know of, it would fill many books- including many in which human beings were the subjects of experiments that caused cancer (like radiation experiments) and even intentional infections of groups of people (specifically minorities or people in third world countries- which they ended up regretting later when they lost multibillion dollar lawsuits. This didn't even end all that long ago- or need I remind you of the tortures conducted at Guantanamo Bay which represented the combination of military and corrupt individuals in the psychiatric profession [which also has a long history of experimenting on mental patients and in the LBTQ+ community.] Of course the corporate sector has done very similar things, many times in conjunction with the military, I dont vouch for them either.
I understand you perfectly. And all these experiments of power over citizens, the rich over the poor, etc., began rather from the very formation of society. So I think the problem here is not in specific governments, but in the specific nature of a whole group of people. These people have always been and always will be. No matter how the social system changes.
Let's say we take the Venus project, which is described in many places as heaven on Earth.
Even with the implementation of such a project, such people will still grow up in those conditions.
Unfortunately, people are the problem. This can hardly be changed. It is unlikely that we will go through the path of evolution towards more peaceful behavior. Quite the opposite. They will just learn to disguise all experiments as a good cause.