America is haunted. Ghosts from its violent history--the genocide of Indigenous peoples, slavery, the threat of nuclear annihilation, and traumatic wars--are an inescapable and unsettled part of the nation's heritage. Not merely in the realm of metaphor but present and tangible, urgently calling for contact, these otherworldly visitors have been central to our national identity. Through times of mourning and trauma, artists have been integral to visualizing...