Who were the mucruckers?

Muckrakers were investigative journalists and social reformers active in the early 20th century, particularly during the Progressive Era in the United States. They aimed to expose corruption, social injustices, and corporate malfeasance, often through sensationalized reporting. Notable muckrakers included Upton Sinclair, whose novel "The Jungle" revealed the unsanitary conditions of the meatpacking industry, and Ida Tarbell, who wrote about the monopolistic practices of Standard Oil. Their work played a significant role in prompting reforms and raising public awareness about various societal issues.