"We are appalled by war crimes in Syria and elsewhere. We are outraged by racism and hatred, especially when voiced by politicians and would-be leaders. They have a duty to bring people together, not drive them apart," Ban told the graduating class of the prestigious Columbia University here yesterday.
The UN has so far in the election cycle refrained from commenting on remarks made by US presidential candidates.
Dujarric has emphasised that he is "not going to get dragged into the rather colourful rhetoric" seen during the election campaign in the country.
Late last year, he had said at one of the briefings that he is "going to try very hard" during the USelectionyear "almost not to insert" the Secretary-General into the US presidential campaign.
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The UN Chief said technology has connected the people and "our challenge is to be more united."
He also made a strong call to the students to help in alleviating the problem of climate change.
"Now that you are done with finals, help us meet the climate test," he said, adding that the world's youth can help bring the historic Paris climate agreement "to life".