EDITORIAL USE ONLY - NO COMMERCIAL OR BOOK SALES. Ultra Orthodox Jews take part in Lag Ba-Omer festivities in Jerusalem's Mea Shearim neighbourhood May 22, 2008. Israelis celebrate the Jewish holiday of Lag Ba-Omer, which marks the end of a plague in the Middle Ages that killed thousands of disciples of a revered rabbi in the holy land, by lighting bonfires across the country. REUTERS/Yannis Behrakis (JERUSALEM)