Class struggle
Class struggle appeared in some forms. First, there is an economic form. The proletariat struggle with the bourgeoisie through their laborer's organization in this form. Second, there is a political form. In this form, the proletariat has their party and, through democracy, they try to change the system. And the last, there is an ideological struggle. In this form, the proletariat try to adapt the old governing system to new social situations. There are other forms of struggle, too. These forms are not exclusive, but exist at the same time.