William Victor "Bill" Gropper (December 3, 1897 – January 3, 1977), was a U.S. cartoonist, painter, lithographer, and muralist. A committed radical, Gropper is best known for the political work which he contributed to such left wing publications as The Revolutionary Age, The Liberator, The New Masses, The Worker, and The Morning Freiheit.
William "Bill" Gropper was born to Harry and Jenny Gropper in New York City, the eldest of 6 children. His parents were Jewish immigrants from Romania and Ukraine, who were both employed in the city's garment industry, living in poverty on New York's Lower East Side. His mother worked hard sewing piecework at home. Harry Gropper, Bill's father, was university-educated and fluent in 8 languages, but was unable to find employment in America in a field for which he was suited. This failure of the American economic system to make proper use of his father's talents doubtlessly contributed to William Gropper's lifelong antipathy to capitalism.
Gropper's alienation was accentuated when on March 24, 1911 he lost a favorite aunt in the Triangle Shirtwaist Factory fire, a disaster which resulted from locked doors and non-existent exits in a New York sweatshop. Some 146 workers burned or jumped to their deaths on that day in what was New York's greatest human catastrophe prior to the terrorist attacks of Sept. 11, 2001.