Some say that Mao's death count could be 100million. The socialists even messed up the documents. They had no incentives to take a good care of everything.
https://mises.org/blog/horrors-communist-china
https://mises.org/blog/marxist-and-austrian-class-analysis
Here is another funny one: https://mises.org/blog/seattle-seahawks-flee-america-medical-treatment