Dozens of leading Palestinian intellectuals, artists and other public figures have published an open letter condemning antisemitic comments made by the Palestinian Authority president, Mahmoud Abbas. In a letter published on Sunday, 96 people, including Rashid Khalidi, the historian, Dana el-Kurd, the political scientist, and Sam Bahour, the prominent businessman, said they “unequivocally condemn the morally and politically reprehensible comments” made by Abbas, which were publicly circulated last week. “We adamantly reject any attempt to diminish, misrepresent, or justify antisemitism, Nazi crimes against humanity, or historical revisionism vis-a-vis the Holocaust,” the letter said. In a televised speech to fellow members...