sentences:  Later in his life, he was a recognized forerunner in Happenings, Conceptual Art, Bad Painting, Neo-Expressionism, and image appropriation.Hedrick was also a key figure in the first important public manifestation of the Beat Generation when he helped to organize the Six Gallery Reading, and created the first artistic denunciation of American foreign policy in Vietnam.Wally Hedrick was known as an “idea artist” long before the label “conceptual art” entered the art world, and experimented with innovative use of language in art, at times resorting to puns.