immigration (Photo: Women in headscarves shop in Berlin’s Neukoelln district September 6, 2010/Tobias Schwarz)

A little-known Berlin politician named Rene Stadtkewitz, who wants headscarves banned, mosques shuttered and state welfare payments to Muslims cut, is the newest face of a powerful anti-immigrant strain in European politics that is winning over voters and throwing mainstream politicians onto the defensive.