ROME (Reuters) - A nativity scene featuring a dark-skinned Jesus, Mary and Joseph that has gone on display in a Verona courthouse has created heated debate in a city with strong links to Italy's anti-immigration Northern League party. The nativity's appearance coincides with the League's controversial operation "White Christmas," a two-month sweep ending on Christmas Day to ferret out foreigners without proper permits in Coccaglio, a small League-led town east of Milan. The Christmas scene -- featuring a dark-skinned baby Jesus dressed in a red shirt and lying in a manger -- was the idea of Mario Giulio Schinaia, the...