People exposed to more "diversity" tend to be less involved in their communities. Thanks to the efforts of the multiculti "do-gooders", young people may be more used to being around minorities, but at the expense of our communities and ultimately our civilization. As a young person exposed to plenty of "diversity", I'm tired of it - when the rise in crime rates and welfare dependency can also be tied to the increase in diversity, I have to wonder what the hell older generations were thinking. The backlash will be ugly.  

http://esr.oxfordjournals.org/content/32/1/54.full.pdf+html
http://archive.boston.com/news/globe/ideas/articles/2007/08/05/the_downside_of_diversity/