Different leadership. Deng Xiaoping had to rebuild china from Mao's insanity. He was the one who created the one child policy, and sent half of china out to get educations to replace everyone who had been killed in camps. He also survived the camps and ridicule. Saying he got something right doesn't negate the evil he and others did.

The leadership now seems to be going power mad and trying to force other countries to have their own red guard wars.