It felt more like a rock concert than an issues powwow when Hillary Clinton appeared on stage to a standing ovation, luminous in bright pink, to take stock and address the unfinished agenda in the fight for women’s equality around the world. “We’ve come so far together, but there is still work to be done,” she said as she highlighted the accomplishments of women in far-flung places. But too many women remain marginalized at best and treated like a subhuman species at worst, she said. “This is the great unfinished business of the 21st century.”