If you've not seen this yet, let me point you to the interactive map of the week.
The map was created by Dustin Cable at the University of Virginia’s Weldon Cooper Center for Public Service. The map displays the population distribution, using the 2010 census data, of every person in America broken down by ethnicity. The map has 308,745,538 dots, each representing a single person. Caucasians are blue dots, African-Americans are green dots, Hispanics are orange dots, Asians are red dots, and other groups are brown dots.
From a bird's eye view this is what America looks like:
Here's my town, Abilene, TX:
One of the takeaways, for me at least, is that encountering difference will involve some intentionality. You have to, quite literally, move in different spaces.
This has been one of the most important aspects of driving the van for Freedom Fellowship (our local church plant that feeds and reaches out to the poor and homeless). In picking people up for Freedom I'm getting out of the "blue Abilene" and exploring parts of my city that I never would have seen before. And let me tell you, it's eye opening.