Many actors flirted with the counterculture during the 1960s, but “Hanoi Jane,” for better or worse, remains the poster girl for that era’s blurring of show business and activism. Fonda, daughter of Hollywood royalty and radicalized during her six years in Paris, marched for Native American rights, befriended the Black Panthers, campaigned for working mothers, and, most prominently, agitated against the Vietnam War, earning her decades of conservative enmity.