"Inter-racial trust is relatively high in homogeneous South Dakota and relatively low in heterogeneous San Francisco or Los Angeles. The more ethnically diverse the people we live around, the less we trust them... In highly diverse Los Angeles or San Francisco...roughly 30 percent of the inhabitants say that they trust their neighbours "a lot", whereas in the ethnically homogeneous communities of North and South Dakota, 70–80 percent of the inhabitants say the same. In more diverse communities, people trust their neighbours less."