An even easier argument to make for the selfish and empathy-challenged is the link between inequality and violent crime [1]. The more money and resources you have to spend on walls and security guards the less you have for investment and consumption on useful things.<p>[1] <a href="http:&#x2F;&#x2F;web.worldbank.org&#x2F;archive&#x2F;website01241&#x2F;WEB&#x2F;IMAGES&#x2F;INEQUALI.PDF" rel="nofollow">http:&#x2F;&#x2F;web.worldbank.org&#x2F;archive&#x2F;website01241&#x2F;WEB&#x2F;IMAGES&#x2F;INE...</a>