The political and social strcture influence art works

In the post-Weimar Culture, during 1933-1939, the main focal point should be between art and social concept. The capitalist control labors' life. Workers work in the unsatisfactory working environment. The big capitalist in the top of society to make unfair use of low class labors. In our lecture, the black and white film also indicates that.
I notice that the same culture phenomenon happens in Asian art, too. For example, in mainland China, (which I come from) the film production after the republic of Chinese government had build. The media became a political tool. Not only film, such as book, radio, visual arts, music and drama. Those fine arts area were totally controlled by government. Artists don't have enough freedom to perform own artistic idea. All the art work has to worship to Mao zhe dong, the first leader of P.R.C. government. As I know, painters are not allowed to draw naked women. Therefore, the same situation happens in Weimar republic. Art works sometimes control by political and social structure. Therefore, the artists and their works in that period cannot evaluate as pure inspiration's products.