In a class society, fierce struggles will also occur between the exploiting class representing the new production relations and another exploiting class representing the old production relations. For example, at the end of slave society, the emerging landlord class fought against the slave-owning class; at the end of feudal society, the emerging bourgeoisie fought against the landlord class. Since the emergence of classes, class struggle has never stopped. It is the direct driving force for the development of class society. The contradictory movement of productive forces and production relations is the fundamental driving force for social development. Class struggle occurs and develops on its basis and is determined by it. In a class society, resolving the contradiction between productive forces and production relations can only be achieved through class struggle. Class struggle takes many forms. Capitalist society is the most fully developed social form of class struggle. The struggle of the proletariat against the bourgeoisie has three basic forms: economic struggle, political struggle and ideological struggle. The struggle of the proletariat against the bourgeoisie will inevitably lead to the dictatorship of the proletariat.

In a socialist society, the exploiting system and exploiting classes have been eliminated. However, due to various domestic and international factors, class struggle will continue to exist within a certain range for a long time and may intensify under certain conditions. This kind of class struggle is different from the struggle between two complete antagonistic classes in the past history, but a special form of class struggle. It is a legacy of historical class struggle under socialist conditions, or a residual form of class struggle. struggle. The class struggle at the present stage in our country is mainly manifested in the struggle between the broad masses of the people and various hostile elements who are deliberately sabotaging and overthrowing the socialist system. In a socialist society, class struggle is no longer the main contradiction in society. In a socialist society, the general development trend of class struggle is to gradually shrink, weaken and ease. When there are no more hostile elements in society, the exploiting system and the exploiting class have been eliminated internationally, there are no longer hostile forces, all the bad influences of the exploiting class have been eliminated, and class struggle will no longer exist.