Tommy Webber is nine years old when his father, a founding minister of the East Harlem Protestant Parish, moves the family of six from a spacious apartment in an ivy-covered Gothic-style seminary on New York City's Upper West Side to a small one in a massive public- housing project on East 102nd Street. But it isn't the size of the apartment, the architecture of the building, or the unfamiliar streets that make the new surroundings feel so strange. While Tommy's old neighborhood was overwhelmingly middle class and white, El Barrio is poor and predominantly black and Puerto Rican. In...