What is the definition of Populist Movement

In the United States, the term "populist" originally referred to the Populist Party and related left-wing movements of the late nineteenth century that wanted to curtail the power of the corporate and financial establishment.

Populism refers to a range of political stances that emphasise the idea of "the people" and often juxtapose this group against "the elite". The term developed in the 19th century and has been applied to various politicians, parties, and movements since that time, although has rarely been chosen as a self-description.