Yoko Ono kneels onstage before a packed Carnegie Recital Hall, dressed in black, a large pair of shears beside her. It’s 1965, a year before she would meet John Lennon. One by one, audience members approach to snip hem, collar and sleeve from her body. While most are modest in their takings, one man stands over her, cutting away her slip before slicing through the straps of her bra beneath. Ono sits expressionless, nearly serene,…