Summer lovin'? Not in angry Europe's tourist hotspots

By Sam Edwards, Isla Binnie and Maja ZuvelaBARCELONA/ROME/SARAJEVO (Reuters) - Chronic overcrowding in some of Europe's beloved tourism hotspots is fuelling an angry backlash, from polite protest to "Go Home" graffiti and even physical intimidation.Across southern Europe, from the choked boulevards of Gaudi's Barcelona to the swarms of cruise liners disgorging passengers into Croatia's mediaeval Dubrovnik, residents are complaining that a sharp rise in tourism is making life intolerable.The back