One common theme is the struggle for freedom. People in restricted countries often yearn for basic freedoms like freedom of speech and movement, and this is reflected in their literature. Another theme is the power of the state or the ruling class over the common people. For instance, in many stories, the state may have excessive control over resources or people's lives.
In essays and short stories from restricted countries, the theme of oppression is very common. The characters may face various forms of oppression such as political, social or economic. They might be restricted in their career choices, education or relationships. Also, the theme of resistance is often present. The characters may try to fight against the restrictions in different ways, either through small acts of defiance or large - scale protests. Another theme could be the isolation of the individual. In a restricted environment, individuals may feel isolated from the outside world or from other groups within their own society.