People attend the opening ceremony of a multimedia exhibition: "Surviving Terrorism: Victims' Voices" at the UN headquarters in New York, Aug. 17, 2018. UN Secretary-General Antonio Guterres said Friday that supporting victims and their families of terror attacks is "a moral imperative" based on promoting, protecting and respecting their human rights. (Xinhua/Li Muzi)

People attend the opening ceremony of a multimedia exhibition: "Surviving Terrorism: Victims' Voices" at the UN headquarters in New York, Aug. 17, 2018. UN Secretary-General Antonio Guterres said Friday that supporting victims and their families of terror attacks is "a moral imperative" based on promoting, protecting and respecting their human rights. (Xinhua/Li Muzi)