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When I arrived in Berlin the weekend of November 9, 2014, I joined more than a million visitors and locals had assembled to commemorate the 25th anniversary of the fall of the Berlin Wall. I joined millions of tourists confronting questions of memory as we traced the path of the Berlin Wall, this time demarcated with glowing helium balloons, rather than barbed wire. That evening, 8,000 individual balloons floated up into the sky.  (Credit: International Business Times) Yet I was no mere tourist; I [&#8230;]