Pundits often assume a minority group has a homogeneous opinion, that members of a particular race will share political values and vote the same way.

The reality, of course, is far more nuanced. New research charts the way values vary between African-American communities in regions of the United States with different histories of racism and discrimination.

A new study suggests that laws allowing police to directly cite motorists for not wearing seat belts may be less effective than they once were at reducing accident deaths.