Mono-ideologies (Russian: моноидеология) are a concept in Russian political and philosophical discourse. Mono-ideologies have been described as fundamentally being linked to totalitarianism and Millenarianism. A totalitarian political system requires an equally total mono-ideology. It can be built on various grounds: nationalist, class, but in any case, it performs two main functions - legitimizing the power of the party (state) and mobilizing the masses.