David Mueller emails:
What are the best books to read on Mao's cultural revolution, Chinese
history, and the cultural revolution coming to America?
The best books on the horror of Mao's cultural revolution ( R. J. Rummel estimates that 38 million died) and the period leading up to it are the books that are the parts of Frank Dikötter's trilogy:
The Tragedy of Liberation: A History of the Chinese Revolution 1945-1957
Mao's Great Famine: The History of China's Most Devastating Catastrophe, 1958-62
I know of no books that detail developing trends in America.
There are however solid videos that cover different aspects of the trends such as The Trojan Horse Ep. 3: Critical Race Theory with James Lindsay.