In Marxism, it is said that the proletariat brings about social change.

His irresponsible behavior caused an accident.

He is deeply immersed in the study of Marxism.

This company is promoting the revolution of technology.

We need a change in the education system.

He has risen in social standing.

We should take responsibility as part of society.

It is generally believed that the life of the middle class is stable.

He emphasized the importance of class struggle.

I am very interested in social science.