The USSR, PRC, Vietnam, Laos, DPRK, Nicaragua, Venezuela, Cuba, etc. all were massive expansions on democracy and working class control. Capitalists, landlords, fascists, monarchists, etc were (usually) violently oppressed, while the working classes were uplifted and society was democratized. From the point of view of the capitalists, they found themselves living in a violent dictatorship, for the working classes they found themselves finally escaping violent dictatorship.