HONK! A Street Band Renaissance of Music and Activism describes the fast-growing and transnational phenomenon of street bands--particularly brass and percussion ensembles--and examines how this exciting phenomenon mobilizes communities to reimagine public spaces, protest injustice, and assert their activism. Through the joy of participatory musicmaking, HONK! bands foster active musical engagement in street protests while encouraging grassroots organization, representing a manifestation of cultural activity that exists at the intersections of community, activism, and music. This collection of twenty essays considers the parallels between the diversity of these movements and the diversity of the musical repertoire these bands play and share.