When Frey tried to check if there was anyone outside his apartment door, he discovered that someone had blocked the viewfinder. The sounds in the street were getting louder. He could hear people shouting “traitor.” They seemed to be hurling firecrackers at the building. He rushed his wife and two children, aged eight and thirteen, out of the living room, which has a large window, and frantically texted friends: “People are attacking my house. Please come and do something.”