South Africa's constitutional court has ruled that former president Jacob Zuma, one of the most divisive political figures in the country, is not allowed to participate in next week's election.
The French overseas territory of New Caledonia has returned to a relative calm after last week's rioting killed at least six people, and exacted a billion dollars in damage to property and businesses.
NPR's Michel Martin talks to Jelani Cobb about the race riots of 1967 and political unrest today. He co-produced a documentary for the American Experience series airing on PBS.