I am an American Jew, and the grandchild of Holocaust survivors. Like so many Jews in this country, I was raised on stories of unthinkable horror. My grandfather’s parents were rounded up with other Jews from their town and shot dead. His brother was tortured and killed by SS officers. His sister, her husband, and baby were killed.  My grandmother’s parents and four brothers were murdered, leaving her the sole surviving member of her family. When news of the atrocities Hamas…