Forced internment of British civilians during World War II

Something I didn't know about world history: During World War II, the British government rounded up thousands of its own citizens — people of German, Austrian, or Italian ancestry. Some were put into camps, others deported to Canada and Australia. Others were simply labeled as potential enemies and spied upon. The really crazy part: Many of these people were Jewish refugees who had become citizens of Britain in order to get away from the Nazis. (Via Carol Roth)