A phone interview by Viviana Mazza for Italy's Corriere della Sera with Mohsen Sazegara, a Revolutionary Guards founder now exiled in Washington, conducted while he marched toward the White House. He calls the Guards and Basij Khamenei's repression machine, describes plainclothes attackers tied to Guards intelligence, warns protests may turn violent, blames Khamenei, reports dissent among Guards members including a former general, and urges protesters to stay peaceful.