The famous American journalist known for his muckraking exposés was Ida B. Wells. An influential figure in the late 19th and early 20th centuries, Wells focused on issues such as lynching and racial injustice in the United States. Through her investigative journalism, she highlighted the brutality faced by African Americans and advocated for civil rights. Her courageous reporting and activism made her a significant voice for social justice and highlighted the power of the press in effecting change.