Socialism is a broad ideology which covers a whole range of different traditions and ideals. There are disagreements within socialism are most definitely between revolutionary and evolutionary socialist in terms of means and ends. Revolutionary socialism believes in the idea that a capitalist system will not easily fall and so the only way to remove a capitalist society is for a mass up rise and overthrow of the system accepting that violence may be involved with this.
From a Marxist-Leninist view the way for this to take place is for a vanguard party to help the proletariat to have some sort of revolutionary class consciousness. Revolutionary socialist reject electoral and constitutional politics as it is inextricably tied to the interest of a capitalist society and the ruling class, which is why Marxists see revolution as inevitable as they believe in the complete abolition of it. Revolutionary socialism therefore seeks the abolition of Private property and the state; this is because Marx and Engels viewed capitalism and its traditions to be a system of naked oppression and exploitation on the working masses and therefore the only way to remove capitalism and enforce socialism is by mass up rise from working class.
Marxists therefore believe that political power reflects class interests and that the state is a bourgeois state that is based on the capital. Reasons in which there is a need for a overthrow of the bourgeois state by political revolution is because Revolutionary Socialists understand that change by political reform and gradual change which is supported by evolutionary socialist are clearly misleading as the ideas of universal suffrage and regular and competitive elections are simply a disguise of the actual reality of unequal classes and to mislead the political energies of the working class. Hence the need for the class-conscious proletariat to