"Violence against people because of their religious identity or beliefs is an assault on the core values of the United Nations. Such bigotry is also one of today's greatest threats," Ban said in a video message for the high-level forum on global anti-semitism here today.
Ban voiced concern that alongside a global rise in anti-Semitism, the world is also seeing many other alarming forms of discrimination - in particular hatred and stereotyping directed at today's refugees and migrants.
Ban's strong message comes days after United Nations human rights chief Zeid Ra'ad Al Hussein lashed out at Republican presidential nominee Donald Trump and Dutch politician Geert Wilders in a speech at the Hague this week, saying the call by such leaders to ban migrants from Islamic countries puts them in the same league as the terrorist organisation ISIS.
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"Geert Wilders released his grotesque eleven-point manifesto only days ago, and a month ago he spoke along similar lines in Cleveland, in the United States," the UN official said.
"And yet what Wilders shares in common with Trump, (Hungarian prime minister) Orban, (British politician Nigel) Farage, he also shares with Da'esh (ISIS)," Al Hussein had said.
The rights chief had said that the "humiliating racial and religious prejudice" fanned by the likes of Wilders has become "municipal or even national policy" in some countries.
The UN Chief has in the past said "would-be leaders" and politicians should not divide people and racist remarks by them are "outrageous", in a veiled reference to Trump, who had called for banning Muslims from entering the US earlier in his presidential campaign.
Ban said even though anti-Semitism is one of the world's oldest, most pervasive and deadliest forms of hatred, still despite the lessons of history and the "horror" of the Holocaust, Jews continue to be targeted for murder and abuse solely because they are Jews.
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