Supported by the Young Turks, an ultra-nationalist party that approved systematic deportation, abduction, torture, massacre and the expropriation of Armenian wealth, the German-allied Ottoman government used the excuse of war to initiate the forcible removal of Armenians from Armenia and Anatolia, where they had lived for centuries. The targeting and mass murder of Armenians has been described as genocide.

Tad Taube

Although racial, ethnic and religious wars have killed millions over the centuries, genocide is a unique byproduct of the nation-state in the 20th century. It requires both a rabid nationalism and the capacity of a central authority to organize and implement a sustained and systematic program of targeted mass destruction. Not until the 20th century had governments the necessary technologies, resources and means to ally their historical ethnic, religious or racist hatreds with radical nationalism to end the collective existence of a people.

The Armenian Genocide was recognized and deplored around the world. American diplomats, Russians, Arabs and German officers stationed in Ottoman lands witnessed the slaughter and alerted the wider world. In May 1915, Great Britain, France and Russia vowed to hold the Young Turks personally responsible for their crimes. Relief efforts were widespread.

Despite moral outrage, however, there were neither sanctions against the Ottoman Empire nor internationally orchestrated efforts to rescue hounded Armenians. Nor did the Armenians receive any reparations after the war, even though between 1920 and 1923, the Turks expelled or annihilated most of the remaining Armenian people.

It took another even more deadly genocide before the world’s moral outrage became international law. In 1948, after World War II, when the full horror of the Holocaust was laid bare and documented, the newly constituted United Nations adopted the Convention on the Prevention and Punishment of the Crime of Genocide. It was part of a nascent body of international law resting on the U.N. Charter, the Universal Declaration of Human Rights and the two covenants – on civil and political rights and on social, economic and cultural rights. The 1948 Convention on the Prevention and Punishment of the Crime of Genocide defined genocide as a crime against humanity and established international sanctions against any nation that in peacetime or war engaged in genocidal violence.

The convention was a victory for all humanity and worthy of celebration. However, it was a victory that came too late for the millions who died terrible deaths in death camps and random murder via inconceivably brutal and inhumane methods. It came too late for the millions who were starved, beaten and murdered by the Nazis during the Hitler regime.

The refrain of “Never Again” arising after World War II has, regrettably, not been employed everywhere. Murderous organized groups such as ISIS and Boko Haram engage in brutal mass killings, torture, beheadings and even more unspeakable atrocities. Iran’s Supreme Leader Ayatollah Khamenei regularly calls for Israel’s annihilation, and Iran continues to arm terror groups committed to the destruction of the Jewish state.

It strains the conscience of our modern societies to realize that on April 24 — 100 years after the Ottoman government murdered 250 leading Armenian intellectuals — the threat of further genocide hangs heavy over our so-called “civilized world.”

As a Polish Jew who escaped Europe on the eve of World War II, most of my family to perish at the hands of the Nazis, I bear personal witness to the horrors of religious and ethnic hatred. I vow that each and every victim of genocide and terrorism who died will never be forgotten.

Tad Taube is the chairman and co-Founder of Taube Philanthropies, based in Northern California, and honorary consul general of Poland in San Francisco.