This chapter focuses on parades, pickets, and demonstrations, which are forms of civic engagement that communicate aspirations, ideas, and, quite often, dissenting opinions to fellow citizens, governments, and broader audiences. For many, gathering together in public, in these and similar forms, is a cathartic act of self-fulfilment and a demonstration of solidarity. Collective action in the form of public gatherings is an integral part of any system of communicative freedom. In the United States, in addition to the freedom of speech, rights to ‘peaceably assemble’ and to ‘petition the Government for a redress of grievances’ are explicitly provided for in the First Amendment to the Constitution. Ultimately, parades, pickets, and demonstrations all further basic expressive values relating to self-governance, the search for truth, and individual autonomy. Nevertheless, Americans seeking to engage in collective modes of expression face a variety of doctrinal, legal, social, and political challenges. The chapter then details how digital connectivity has facilitated expressive opportunities by connecting individuals and supporting new forms of associational activity.