For example the political landscape in the US, is still very much dominated by economic elite interest groups. [0]
People are still actively disfranchised from participating in the democratic process, having their right to vote taken from them over a criminal history. After they came out of the literally largest incarceration system of the planet. Locking people up under circumstances that in most of the developed "Western world" are bluntly considered torture [1].
But torture is apparently a-okay as long as it's described in euphemisms like "enhanced interrogation", just like assassinating US citizens is a-okay [2] as long as it allegedly keeps the "homeland safe".
Just like involuntary servitude, aka slavery, is still very much a thing in the US, it the race based variant of that may have been abolished as an "institution" but the practice still very much exists as punishment for crime.
That's just domestic, that whole can of worms only gets nastier foreign policy wise with wars of aggression and the casual and regular disregard for other countries sovereignty.
As such, these are not events from some far-flung past we judge with completely different standards, these are very current and still on-going events being judged with the current standards.
[0] https://www.cambridge.org/core/journals/perspectives-on-poli...
[1] https://www.reuters.com/article/us-rights-un-usa-torture-idU...
[2] https://theintercept.com/2017/01/30/obama-killed-a-16-year-o...