Sheikh Samir Assi, the Imam of Acre, is a man of peace. Unlike many of his colleagues, he has made his support for the sanctity of human life a very public affair. Sheikh Samir concludes all services at the storied Al-Jazzar mosque with a prayer for peace. Whether preaching to his flock or speaking to Jewish or Christian groups, he teaches that the most important message of Islam is love. And a few years ago, in order to demonstrate commiseration with the sufferings of the Jewish people, he helped initiate a visit of Muslim clerics to Auschwitz. Sheikh...