USSR, it did an enormous amount of good for large parts of the developing world.
I can't even.
Forgot your meds again?
I'm sure millions of gulag prisoners and residents of NKVD mass graves would agree.
They can't because communists murdered them. Even under communist strict control of information space and rampant propaganda Poles wanted to be part of the West and hated communist regime forced upon the nation. Nothing changed here - our current pro-western and anti-Putinist Russia policies are consistently supported by more than 90% of our population because they are a realisation of our raison d'etat.
hundreds of thousands of Angolans, Ethiopians, Zimbabweans, Vietnamese, Cubans, Algerians, and Nicaraguans
Communism differed a bit in every country where it was introduced by force. But it lead to poverty and tyranny everywhere. Communist parties do not have majority support in neither country of the former Warsaw Pact precisely because we know where that leads, usually they remain in deep opposition with no chance to get back into power.
My parents are currently in their mid 70s. They remember communism: the unending queues, the poverty and the hopelessness. And they joy they felt when it finally fell apart. They would never change the current reality for the bad old times, even though they were young back then which people tend to remember fondly.