Diana Serra Cary, who is believed to be the last remaining major film star from Hollywood’s silent era and is the subject of the documentary “Baby Peggy: The Elephant in the Room,” joins us along with the film’s director, Vera Iwerebor. Peggy-Jean Montgomery was a hugely popular Hollywood star, earning $1,500,000 a year by the age of 6. But by the age of 11 her money had been stolen and squandered by her family. Six decades later, she reinvented herself as Diana Serra Cary, a film historian and advocate for laws protecting child performers. "Baby Peggy: The Elephant in the Room" is screening at MOMA September 5-9.