It’s clear that today’s Democratic Party is very far left. But it may come as a surprise to learn that it’s further to the left than the Chinese Communist Party! Much further. For example, China has the world’s second largest number of private billionaires and is proud of that fact!
It's still strongly influenced by the legacy of Deng Xiaoping, who reportedly said, “To get rich is glorious” and “Let some people get rich first.” If these words were said in America, the Democrats would denounce them as the “trickle down” theory.
To learn what's right with capitalism and wrong with socialism, and implicitly what's right and wrong with China, first read the book at https://amzn.to/2N44uTu and then, for deeper, more comprehensive knowledge, the book at amzn.to/2PM19ut. Especially Democrats and all other leftists should do this.