I’ve witnessed the effects of diversity up very close and very personal. I’ve been there and seen that. It’s not a pretty picture. I grew up in an expansive, four room, one bath luxury tenement in the South Bronx in the 1950’s, in a neighborhood adjacent to the future Fort Apache and peopled by the working class of Irish, Italian, German, and Polish extraction, and representatives of a number of other, chiefly European, nations. We all got along pretty well. There were gangs, of sorts, but not of the West Side Story variety. Most of us were Catholics, with a...