“Stranger Things” star Brett Gelman has had two stops on his book tour vanish. Bookstores in California and Illinois scuttled scheduled events featuring the 47-year-old comedian due to harassment and intimidation from antisemitic and anti-Israel protesters, he alleges. The Jewish actor will no longer have the chance to promote his fiction debut at Book Passage in San Francisco and The Book Stall in Winnetka. Gelman had been set to appear at the venues as part of a four-city tour for his forthcoming short story collection, “The Terrifying Realm of the Possible: Nearly True Stories.“ “The bookstores canceled because of protester...