Contributor(s): Gavin Hewitt | As populist parties and demagogues trade blows with discredited elites, political legitimacy in Europe seems more fragile than ever. Has the euro crisis dealt it a mortal blow? Gavin Hewitt has been the BBC’s Europe editor since 2009. He is the author of several books, the most recent of which is The Lost Continent. Maurice Fraser is professor of practice in European politics at the LSE European Institute.