Nor is there any reason why the state should not help to organize a comprehensive system of social insurance in providing for those common hazards of life against which few can make adequate provision.

ECONOMIST: Daily chart

The most common security hazards are "bandit" runners who jump on the course without registering - or racers who take shortcuts, and for the most part, mass violence at sporting events is exceptionally rare across the world.

BBC: Boston Marathon attack: How secure are marathons?

Brenner replied that there are several studies of the exposure following Fukushima that show the local population received low doses that amount to less risk, for the individual, than other hazards common in life.

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