The hour-long march with 15,000 protestors demonstrating against Prime Minister Andrej Babis began from Prague's central Wenceslas Square to the Government Office on Tuesday.
Million Moments for Democracy has demanded his former business empire, Agrofert, be cut off from European Union subsidies and public contracts and have called on him to resign from the office.
"We are here because we don't want to tolerate the continued disintegration of the political culture in our country," Million Moment's leader Mikulas Minar told crowds who chanted "Resignation" before marching.
(Photograph:Reuters)