This article explores the philosophical underpinnings and implications of the idea of the public in the US state processes of knowledge production and control. In it we take up questions of public and counterpublic political philosophical knowledge production and mediation in relation to an expanding state. Specifically, we examine the political philosophies of racialized counterpublics since the 1960s, considering the particular knowledge production genre of the political prison letter. We suggest that the philosophical principles of the dominant public in the US have a proclivity to merge with state mechanisms of domination and to thwart counterpublics and their modes of political knowledge production.