I don't get your gated communities comment. That's what I was pointing out. Heck, come here to LA, the gated communities like in OC, etc, are all generally republican voters. Down in the city, there's none of that, and at times, crime has been rampant (same applies to NY, Philadephia, or Chicago, or any large metro area), and they still largely vote blue.
The notion that democrat voters see an alternate reality from cops is pure fantasy, backed by nothing. We all live in the same world and reality, some people just feel the solution to it is X and other people think it's Y. Then parties go ahead and cater to X or Y, and people make their decision.
This is no different than seeing obscenely rich people (ie: Kochs/Adelson vs Soros/Steyer) that likely do live in a very different reality from your average american, yet still find ways to associate with red or blue.