Communist can have classes, its about economic equality based on your skills and need. A family with 8 kids would of course need more money then a single man. A genius doctor would also be payed more then a common coal mine based upon his abilities.
They also control all commerce within in china, which exactly is what communism is about collectivism. This can include collectivist speech as well
These are also part of communism. With religious repression comes all those things really. Its hard to one without the others. Marv never lived to see communism implemented but this is what it induces, even in a perfect world as people say a fundamental of communism is religious suppression, because it is believed to control the working class. Which religous suppression is of course a bad thing