So I got a chain e-mail. Any truth to this part?
It seems they got it a little wrong:
Yeah, the details are a bit wrong. Early on in the occupation, red knit caps came to be a symbol of protest, so much so that they were banned. This led to some almost comical situations, like the Santa Claus issue mentioned in the link Cardinal provided. At times the German occupiers would spend time fussing over whether not wearing a knit cap in cold weather was itself a form of protest that they needed to crack down on, since the absence of any cap might be meant to imply a red one.
I’ve long thought that Norway’s greatest contribution to the war effort was keeping thousands of Nazi officers tied up in a state of constant low-grade paranoia