The Chinese also don't talk about a lot of the bad things that happened in the great leap forward, which could have a case made that it was worse than slavery.
Is like to see what that case is? Because nothing about the Great Leap I’ve read compares to chattel slavery or the 40% losses of life in the transatlantic slave trade.
In absolute number of dead, it's certainly worse, if only because of the scale of China. According to Henry Louis Gates 12.7 million Africans were abducted by the slave trade. Estimates for the Great Leap Forward are 15 to 55M dead from famine and several million more from violence.
The Great Leap famine that killed between 11.6 - 55 million over fours years, compared to the Atlantic slave trade with estimated deaths from 2 - 60 million (over 200 hundred years).[1]
Go read stories about neighbors eating each others children to survive. It is pointless to compare tragedies as to which is worse, but it is worthwhile to recognize the magnitude of the (unimaginable) suffering caused by bad policy. The point is you wouldn't want to experience either -- neither is a better choice, they were both disasters worthy of keeping in memory.
No, they are comparing the atrocities of the Chinese government that inspired Tianamen Square to slavery, without saying that the two are equivalent