GLENDALE, CA - NOVEMBER 29: Vroman's Bookstore presents Senator Bernie Sanders discussing his new book "Our Revolution" at Alex Theatre on November 29, 2016 in Glendale, California. (Photo by Phillip Faraone/Getty Images)
GLENDALE, CA - NOVEMBER 29: Vroman's Bookstore presents Senator Bernie Sanders discussing his new book "Our Revolution" at Alex Theatre on November 29, 2016 in Glendale, California. (Photo by Phillip Faraone/Getty Images)