As the soul of the muckraking movement, the muckrakers including journalists and writers exposed the society darkness in their muckraking works, such as political corruption, economic corruption, medical and health issues and worker issues. By way of awaking the mass and supporting legislation, the muckrakers stimulated the progressivism movement.

作为美国黑幕揭发运动的灵魂,黑幕揭发者发起了这场舆论监督,通过一系列黑幕揭发作品对美国的市政腐败问题、经济腐败问题、医药卫生问题、劳工问题等黑暗面进行了全方位的揭露,在社会上引起了巨大的反响,推进了进步主义运动的深入。