King Willem-Alexander and Queen Maxima Of The Netherlands Attend Liberation Day Concert [Getty Images]

AMSTERDAM, NETHERLANDS - MAY 5: People standing around a banner reading 'Pass On Freedom' watch the Liberation Day Concert on May 5, 2016 in Amsterdam, Netherlands. Liberation Day (Dutch: Bevrijdingsdag) is celebrated each year on May the 5th to mark the end of the occupation by Nazi Germany during World War II. (Photo by Michel Porro/Getty Images)

Getty Images Entertainment Michel Porro