...immigration and ethnic diversity tend to reduce social solidarity and social capital. New evidence from the U.S. suggests that in ethnically diverse neighborhoods residents of all races tend to “hunker down.” Trust, even of one’s own race, is lower, altruism and community cooperation rarer, friends fewer.

As one would expect, given that humans are tribal animals. Diversity is not strength, it weakens communities and is conducive to racism. I wonder, how long will it take for everyone to accept this? Much damage has already been done.