4519x2500pxInternational Workers Day poster, city silhouettes, revolutionary workers, construction worker silhouettes, labor day celebration, urban skyline art, worker solidarity graphics
800x800pxconstruction worker hand, Trade union symbol, International Labor Day illustration, Labor Day hand drawn artwork, union worker protest, workers rights icon, industrial solidarity graphic
465x640pxraised fist Communist symbolism, American Communist Party logo, socialism resistance icon, red revolution protest, worker solidarity symbol, anti-capitalist art movement, progressive activism graphic
