Since 1920 Cartoonist William Gropper has been busy as a beaver, trying to gnaw down the capitalist system. One day that year Manhattan's Tribune rashly sent Gropper to caricature an I. W. W. rally. Instead, he became a convert. This week Manhattanites from Red to pink and some who just like pictures celebrated "20 Years of Bill Gropper" with a show of his recent paintings at the A. C. A. Gallery, a Gropper monograph (36 reproductions, text by self-taught fellow Artist Joe Jones), a rousing rally in Mecca Temple.
But this kind of hullabaloo could not obscure the most important fact: quiet,...