There also were important changes in American painting during the 1920s. Actually, American art had been changing in important ways since the beginning of the century. In 1908, a group of New York artists arranged a historic show. These artists tried to show real life in their paintings. They painted new kinds of subjects. For example, George Bellows painted many emotional and realistic pictures of the sport of boxing. His work, and the painting of other realistic artists, became known as the "Ash Can" school of art.