https://www.anneapplebaum.com/
In particular Red Famine:
https://www.anneapplebaum.com/book/red-famine-stalins-war-on...
Also read Mao's Great famine:
https://www.amazon.com/Maos-Great-Famine-Devastating-Catastr...
"Everytime" as the OP says is too strong. But we have often learned that things were bad beyond belief, as in the Holodomor and The Great Chinese Famine.
Also with Iraq there were incredible actions carried out against the Marsh Arabs and the Kurds and also chemical weapons were used by Saddam Hussein. The thing was a lot, perhaps the worst, were carried out when Hussein was an ally of the West against Iran.
https://en.wikipedia.org/wiki/Human_rights_in_Saddam_Hussein...