The Jewish Defense Organization (JDO) is a conservative Jewish organization in the United States founded in 1985 by Mordechai Levy, currently its National Director. It focuses on combatting anti-Semitism and holocaust denial, and although represented across the USA, has a strong presence in and around New York City. It also maintains Camp Jabotinsky, a self-defense and weapons-training center in the Catskills. The JDO regularly provides pro-active safety campaigns within predominantly Jewish neighbourhoods. It has frequently been forced to respond to anti-Semitic activity by providing custodian-teams in Manhattan.