The original comment was entirely arbitrarily limited to the 1900s, and as it brought "the left" into the discussion unprompted, I can only assume this was done intentionally to justify specifically going after left regimes. So firstly, I don't see why a counter-argument should stick to this arbitrary time frame, and secondly, some of my examples do in fact apply to this time frame too.
You chose to ignore that, blathering on about the middle ages is off-topic.