Mmamoloko Kubayi-Ngubane (2nd L, front), South Africa's Minister of Tourism, addresses a meeting of the United Nations General Assembly on the observance of the annual Nelson Mandela International Day, at the UN headquarters in New York, July 18, 2019. The leadership of the UN on Thursday called for actions on hate speech on the occasion of the Nelson Mandela International Day. (Xinhua/Li Muzi)