 Sartre continued to lead various social and political protests after that period, especially concerning French colonialism (see  section 7  below). By the time of the student revolutions in May 1968 he was no longer quite the dominant cultural and intellectual force he had been, but he did not retreat from public life and engagement and died in 1980. Estimates of the numbers of those attending his funeral procession in Paris range from 50–100,000 people. Sartre had been in the midst of a collaboration with Benny Levy regarding ethics, the so-called “Hope Now” interviews, whose status remain somewhat controversial in Sartrean scholarship, given the interviews were produced in the midst of Sartre’s illness and shortly before he died, and the fact that the relevant audio-recordings are not publicly available.