But police departments around the country are working very hard to fight these ill-conceived notions and, in recent years their diversity recruitment and selection processes, paired with modules in sensitivity and multicultural training, have had an impact.

CNN: Commentary: Obama's rush to judgment on police

Six of the top 10 men in the current World Golf Rankings are from different Olympic nations, and selection rules will ensure even more diversity.

WSJ: Fairway to Rio: Golf Comes to the Olympic Games

Before the last general election Mr Cameron meddled with candidate-selection procedures to enhance social and ethnic diversity.

ECONOMIST: Politics