“…Though I cannot directly test these mechanisms, that is, observe specific union communications to their members on the issue of inequality, and then assess how union members internalized this information, nor directly observe union‐based discussion about economic inequality, I attempt to bring a variety of indirect evidence to bear, showing that, first, labor unions do emphasize the issue of inequality and, second, that unions—by facilitating workplace discussion—can shape their members' attitudes on this issue. To make this argument, I draw on recent work that has demonstrated the capacity of labor unions to shape their members' political attitudes on economic issues (Ahlquist, Clayton, and Levi, ; Kim and Margalit, ; Mosimann and Pontusson, ).…”