At the end of the 19th Century, farmers were unhappy with political affairs, deflation, high tariffs, crops prices going down, debts helped with their discontent. Because of that, they formed The Farmer’s Alliance and also the Populist Party to try to influence politics.
This way they influenced new ideas into the monetary policy, like the “free and unlimited coinage of silver”, graduated income tax, government ownership of the railroads, shorter workday, direct election of senators.
Their campaign for the government ownership of the railroad got a major win with the decision by the US Supreme Court on the case Munn v. Illinois that stated the power of states to regulate rates of railroads and other business.