I wondered the same thing as Jason, but I will put it more bluntly. Is it really diversity that causes this problem, or one specific minority group, blacks? I find it hard to imagine that there is lots of trust in homogenously black neighborhoods. Just the opposite, all-black neighborhoods are the most crime-ridden. I would suspect that the percentage of the people with IQs below some threshold number, such as 85, is what leads to bad communities.
As un-PC as it is for Robert Putnam to point out that diversity is bad, it's even more un-PC for him to point out that black people are bad.
This reminds me of my old Apprentice blogging. In season three of The Apprentice, Donald Trump separated the participants into the college educated team and the non-college-educated team. Here is what I wrote about one episode:
The task for this episode was to run a run-down motel in Seaside Heights (boy, those places looked vaguely familiar!). The non-college educated team lost, and the project manager, Brian, was fired. And deservedly so.
In this episode we begin to see the difference between the college educated and the non-college educated, which is basically the difference between the lower classes and the middle/upper-middle class. The non-college educated team, basically, lacks class. They were screaming and yelling at each other, using the "F" word, and putting off the motel guests with their loudness. The ritualistic polite behavior of the college educates allows them to work better as a team.
Brian is supposedly a "self-made millionaire" at the age of 29. But he's also an abrasive moron with absolutely no self control. This proves that you can be a person with few redeeming qualities and still be successful in real-estate sales. A very important life lesson there.
The college-educated group, in other words the high-IQ group, cooperated better with each other. This was seen in many episodes from that season. Here is what I wrote about the famous cucumber episode:
Last week, Magna had the more creative idea and the executed it a lot better. It actually made sense to me, it shows the cucumber being washed, and then when the guy turns out to be homosexual, that part does add a new “twist.” It may not be suitable for broadcast TV, but I liked it nevertheless.
Net Worth lost the cucumber body wash assignment because they couldn’t get along. As I explained a few weeks ago, the ritualistic polite behavior of the college educates allows them to work better as a team.