If the sixties had ended on August  17th 1969 instead of the 31st December, Woodstock would be considered  a fitting finale to a turbulent decade but instead, just a few months later the sixties dream became its nightmare at another free concert, this time headlined by the Rolling Stones. With support from Santana, Jefferson Airplane and a host of other acts, events would unfold that led to the ugliest scenes in the history of rock music culminating in the deaths of four people.