JDL 613 Brotherhood leaders back violence against Palestinians and have ties to convicted terrorists. Sign up for Breaking News US alerts. A man linked to a group supporting violence against Palestinians has been charged in a firebomb plot. The JDL 613 Brotherhood has leaders who endorse violence against Palestinians and have platformed a convicted terrorist who fundraises for a violent settler movement in the occupied West Bank. Video recordings by the group reveal an obsessive antipathy to New York’s mayor. Read more.