What do you mean by the Soviet joke?

The so-called Soviet jokes are often subtle expressions of dissatisfaction and ridicule of Soviet policies. Since the birth of the Soviet Union, there have been a lot of political satirical jokes in Soviet society. These jokes are not only numerous, but also sharp in language, which is a "hidden and undisclosed form of protest" that affects the political system. Today, these Soviet jokes are not so much jokes as a reflection of a special historical period.