Agree - the world has horrible things happening, although not on the scale of socialism. The thing that comes close is WW2, but that was an actual war, and not just starving millions of people due to central planning.
However, Cambodia:
> Pol Pot and the Khmer Rouge were supported for many years by the Chinese Communist Party (CCP), led by Mao Zedong;[c] it is estimated that at least 90% of the foreign aid which the Khmer Rouge received came from China, including at least US $1 billion in interest-free economic and military aid in 1975 alone.[11][12][13] After it seized power in April 1975, the Khmer Rouge wanted to turn the country into an agrarian socialist republic, founded on the policies of ultra-Maoism and influenced by the Cultural Revolution. [0]
However, Cambodia:
> Pol Pot and the Khmer Rouge were supported for many years by the Chinese Communist Party (CCP), led by Mao Zedong;[c] it is estimated that at least 90% of the foreign aid which the Khmer Rouge received came from China, including at least US $1 billion in interest-free economic and military aid in 1975 alone.[11][12][13] After it seized power in April 1975, the Khmer Rouge wanted to turn the country into an agrarian socialist republic, founded on the policies of ultra-Maoism and influenced by the Cultural Revolution. [0]
[0] https://en.wikipedia.org/wiki/Cambodian_genocide