From Grace Lee Boggs in The Next American Revolution (2012):

Radical social change had to be viewed as a two-sided transformational process, of ourselves and of our institutions, a process requiring protracted struggle and not just a D-Day replacement of one set of rulers with another. The Montgomery Bus Boycott of 1955-56 was the first struggle by an oppressed people in Western society from this new philosophical/political perspective…not only desegregating the buses but creating the beloved community.