Echoing Atrios' assessment of Tom Brokaw as "blithering idiot of the day", Brokaw should have been with me yesterday, canvassing in 1 square mile in New Jersey, We were tasked to knock on over 800 doors. Half of them turned out to be in retirement/nursing homes (Apt. 2D on the sheet turned out to be bed 2D in some cases.). So there you have large, concentrated populations in the Jewish and Catholic centers. Additionally, in the same square mile we hit million dollar McMansions, a neighborhood of tiny bungalows, as well as property backing on to a farm. Probably 2500 people living in that square mile, with ethnic, age, and income diversity matching the whole country.
That's 21st century America, dimwit.