There is a famous scene in the film Dr. Zhivago where the eponymous doctor returns to his private home to find that the Bolsheviks have seized it and decided to house 30 families there. As Zhivago, who has been off fighting on behalf of Mother Russia, attempts to wrap his head around the new status quo, a socialist housing commissar scolds him for ever having had such a luxurious home in the first place. Most Americans watch that part of the movie and think, “That could never happen here!”After all, the Third Amendment to the Constitution of the United States...