A show at New York’s Storefront for Art and Architecture asks the architecture world to petition its political leaders. Dear Mayors (and All Other Inhabitants of Cities),Last week, the Storefront for Art and Architecture in New York City opened an exhibition called Letters to the Mayor. It consists of 50 letters to mayors of various cities by an invited group of architects, critics and curators. It’s not much to look at—just some notes typed on white paper and pinned to the wall—but it aggregates and articulates important points about contemporary architecture and urban development. The letters hang opposite wallpaper designed