The bare-chested, bead-donning Pied Piper here was captioned as a member of the Yippies. I confess I know nothing of Yippies (only the later Yuppies), but wikipedia says:
The Youth International Party, whose members were commonly called Yippies, was a radically youth-oriented and countercultural revolutionary offshoot of the free speech and anti-war movements of the 1960s, founded on December 31, 1967. They employed theatrical gestures, such as advancing a pig (“Pigasus the Immortal”) as a candidate for President in 1968, to mock the social status quo.
Pigasus the Immortal? I don’t get it.