Gauland of the anti-immigration party AfD attends a demonstration against German Chancellor Merkel's...
Alexander Gauland of the anti-immigration party Alternative for Germany (AfD) attends a demonstration against German Chancellor Angela Merkel's migrant policy in front of the chancellery in Berlin, Germany, December 21, 2016, after a truck ploughed through a crowd at a Christmas market in the captial on Monday night. REUTERS/Hannibal Hanschke