Which American painter and graphic artist gained fame in the early thirties for a series of paintings on the trial of the anarchists Sacco and Vanzetti, beginning a career which constantly addressed various social and political causes?

Which New Deal arts program muralist intentionally manipulated the topography in his 1937 Pittsburgh Panorama for that city’s Federal Courthouse and Post Office so that the finished image would resemble a hammer and sickle?

Answers here~ https://schristywolfe.com/2015/09/12/september-12/