The first images we see in Sierra Pettengill’s new documentary “Riotsville, USA” (Magnolia—Field of Vision—Canal & the Gallery, Arch + Bow Films—XRM Media—LinLay Productions, 2022, 91 min.) are grainy 16
One of the most fascinating documentaries to emerge from Sundance Film Festival this year is Sierra Pettengill's archival exploration of Riotsville, USA, a