Up Against the Wall Motherfuckers was an anarchist group started in the late 1960s in New York City by Ben Morea and the poet Dan Georgakas prior to groups like the Weather Underground and the Yippies. They were a counter culture group that was “opposed to and resisted on principle any attempt to impose order on the political demonstrations they participated in.” Although primarily in New York, the group spread to other cities like Boston (where the items below are from). By the early 1970s the group was more or less dissolved. [1]
For more information read this interview with Ben Morea: https://libcom.org/history/against-wall-motherfucker-interview-ben-morea
[1] http://en.wikipedia.org/wiki/Up_Against_the_Wall_Motherfuckers