The Altamont concert was on December 6, 1969.
Apparently the idea for a "hippie funeral" was originally conceived a commentary on media coverage, but it did mark the beginning of the decline.
Well, the hippie thing was just building steam in 1967. Can’t see why they’d have “funeral” then.
Seems like the Altamont Concert in 1969 was its last hurrah in a way.