one who spreads real or alleged scandal about another
A group of writers helped spread the Progressives' ideas. These writers were called muckrakers, because they uncovered "muck," or shameful conditions in American business and society.
the movement of persons from one locality to another
Between 1916 and 1970, about 6 million African Americans moved from farming areas in the South to big cities in the North. This movement is known as the Great Migration.