Yes, this is definitely true. Hardly anyone in China knows about the Tiananmen Square incident. My sister lived in China last year. Of the people she asked, most knew nothing about it. The few who did said that they keep quiet about it and don't tell others. Most of the Chinese believe their government is good and looks out for them, even if it does have a few small problems.
Also, they didn't know that the evolutionary theory is a theory and that there are other theories. They are taught evolution as a fact.