LIVERMORE, Calif. — Sonny Barger, the leather-clad fixture of 1960s counterculture and figurehead of the Hells Angels motorcycle club who was at the notorious Rolling Stones concert at Altamont Speedway, has died. He was 83. Barger’s death was announced on his Facebook page late Wednesday. “If you are reading this message, you’ll know that I’m…

Sonny Barger, Figurehead of Hells Angels, Dies at 83