"Cambridge tenants chanting, dancing, singing and burning incense filibustered the Cambridge City Council into postponing a vote to throw out Rent control." was the lead paragraph in the Boston Evening Globe. I'm the person near the bottom of the picture wearing striped pants. We were successful in avoiding a vote - there were 5 councilors (of 9) who would have voted to kill. This was the last meeting in 1971, and the makeup of the Council was slightly different in 1972.
This meeting was in December 1971; I don't remember if I was still a tenant then just before I bought the house where my apartment was. i live there.
Rent Control actually got killed in 1994 by statewide referendum.