The downside of diversity - The Boston Globe. From 2007, but I missed it the first time around. It's still fascinating. Its big failure: no mention of class or wealth to put "diverse neighborhoods" in perspective. 'Cause if these are richer neighborhoods, it's no surprise that the results are what they are: rich people are statistically more self-obsessed and less generous. Or if they're poorer neighborhoods, it makes sense, too: People may be too busy scrambling to survive.
The problem with talking about "diversity" is it's meaningless without an acknowledgment of the c-word.