Other countries think of 20-30 people in their family, Americans generally think of less than 10.

That's one reason universal health care is a hard sell. People want to take care of "their own," and sharing anything outside the tribe (be it race, religion, rural/urban) is taking away from the tribe.

Other countries with extensive social programs tend to be more racially and religiously homogeneous, which makes their circle of acceptance bigger.

Just an explanation, not an excuse.