Jan Van Raay records this as a protest demonstration of the Black Emergency Cultural Coalition at the Whitney in 1971. They were a group of black artists founded by Benny Andrews, and this was one of several different black demonstrations that were held at the Whitney in those years.
Mom and I were there representing the issues of WSABAL (Women Students and Artists for Black Art Liberation). Or in other words, we were there as feminists but in the context of a predominantly black male group although Vivian Browne and other black women artists are included in the pictures. Really really interesting set more of which are visible at http://www.flickr.com/photos/janvanraay/sets/72157602103798348/