Ask the Cubans.
The are no simple applications of pithy thoughts. The world is messy, subjective and everyone has an inherent bias to their world view. And most importantly, it isn't fair or just. We just hopefully try to do better than yesterday.
Go look at the UN Council on Human Rights, which is historically a literal who's who of human rights abusers.
The UN Security Council is actually the only UN group that can officially declare Human Rights Abuses... but of course a single veto prevents that.
The ICC has its own host of issues around bias.
I guess my point is most issues are not as clear cut in the moment as they are in retrospect.
Some are clearer than others, of course. But life is messy, and the victors have always written the narrative that past events are judged. It's a relatively recent artifact where we can argue about this stuff in real time.