In recent weeks French fishermen have blockaded the port of Calais to show what they think of Europe's rules on net sizes, presumably unaware that their own government supported those rules.
ECONOMIST: Europe's mid-life crisis
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The north west of England has been the worst hit region so far, with the Stanlow Shell Oil Refinery at Ellesmere Port in Cheshire blockaded since Thursday night.
BBC: You are in: UK
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Angry Canadian fishermen last summer blockaded an Alaskan ferry in the port of Prince Rupert.