After Boston Attack, London Keeps Calm and Carries On

A little stiff upper lip is in order after the bombings in Boston, because London stages its own annual marathon on April 21, with 37,000 runners expected to take 

There's a fad at the moment for jokey versions of the famous World War II "Keep Calm and Carry On" poster, which the 1939 British government printed to reassure the public after the start of German air raids.

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