On March 6, 1971 – International Women’s Day – 150 women veered from a march in support of women’s liberation, choosing instead to turn left on Pearl Street in Cambridge’s Central Square. The other protestors continued on their march from downtown Boston but for the breakaway, theirs was a different endpoint: 888 Memorial Drive, a Harvard-owned building occasionally used by the design school. In what they expressed to be a denunciation of the gentrification of…