Admission only for the authorized: and that means owners,employees,and invited guests. All others see only high walls and guarded entrances. Gated communities are sealed off from the rest of the world.The idea was born in the United States but has spread across the globe,especially in the large cities. In India’s megalopolis Mumbai,they are multiplying fast. Large construction companies have realized that the upwardly striving middle classes dream of such ”cities within a city”: fortresses that keep poverty,violence,and noise at bay.