The scope of the problem is, of course, difficult to gauge precisely. But recent polling is suggestive—and alarming. An Anti-Defamation League study released last May found “persistent and pervasive” anti-Jewish attitudes after surveying 53,100 adults in 102 countries and territories world-wide. The ADL found that 74% of those surveyed in the Middle East and North Africa held anti-Semitic attitudes; the number was 24% in Western Europe, 34% in Eastern Europe and 19% in the Americas.