Learn English – looking for antonym of plutocracy

antonymssingle-word-requests

I came across a word plutocracy

Oxford Advanced Learner's Dictionary of Current English :

(a) [U] government by a rich and powerful class

(b) [C] state governed in this way

I am looking for its opposite word.

I do not think communism or democracy, which have the following definitions, are good.

communism

social and economic system in which there is no private ownership and
the means of production belong to all members of society

democracy

system of government by the whole people of a country, esp through
representatives whom they elect

Is there any word or phrase which is defined as: government by a poor class
?

You're looking for ptochocracy, which is a rare (and often derogatory) word with the following definition:

A government elected by or consisting of the poor; (in extended use) poor people considered as a class.
_{Oxford Dictionaries}