Shots of mayor Fiorello La Guardia of New York City operating machine ripping down slums in New York. Shot of crane loading trucks, buildings falling. Shots of new apartments under construction. PAN across new apartments. Shot of girders being swung into position on building under construction, camera on elevator as it rises past girders and skeleton of new building. Shot of worker heating and throwing rivets for girders, walking girders. LS of New York City.