April 24 marked the 25th year that the New York Museum of Jewish Heritage has memorialized the Holocaust in Europe. Why is a day of remembrance so important? Because we remember the 6 million Jewish people who were killed, including about 1.5 million children, during those unspeakable events. And the 5 million other “undesirables” in Europe who were rounded up and subjected to similar atrocities. All of these acts were carried out by ordinary people. But it also reminds us of the hate- and fear-driven American imprisonment of our own Japanese American citizens living near the West Coast during World...