I don't think they were celebrating the holy Birthday of the Savior, but the winter solstice and the pagan sacred German/Saxon tree... Anyway... 
DVX

Christmas with the Führer

Looking at the young lady fashion, I would have said yes. Looking at the signs against the American barbarians and children killers, I have said yes. But the words "Up the Italian Social Republic!" and "Vincere" (Win!) don't admit the Vietnam war contest, and much less the 1968. So it's spring 1944 and not 1968...
She was 20 years forward, wasn't she? Also for the fashion... that's why this picture has struck me. DVX

Spring 1968? Student protests?

Riverine Port of Rotterdam from the air, shortly before the outbreak of war, 1938-'39.  The tiny "old port" - the "dead end" towards the middle-right of the photo, miraculously survived the infamous cock-up that was the German bombing of 1940, and subsequent Allied artillery bombardment in 1945 (I have had lunch there - it has hardly changed).  Everything visible around - and much, much more, was burned to the ground (and I mean to the ground) by the German bombing and its consequences, which (unintentionally) involved setting fire to the warehouses clustered around the Old Port, many of which were crammed to the roof with flammable materials such as fabrics and cooking oils and fats.  The resulting conflagration, which took fire brigades from all over the Netherlands and much of western Germany, took several days, by which time most of the city centre had been destroyed.  Postwar, the area was rebuilt in a variety of "modern" (generally brutalist) styles.  Very, very sad.  Best regards, JR.