Last month, we had the opportunity to delve deeper into the devastating and horrifying truths of the Holocaust. We traveled to six countries—the Czech Republic, Poland, Lithuania, Latvia, Estonia and Germany—and together with 100 leading American philanthropists and scholars, attempted to comprehend the scope of the genocide carried out by Nazi Germany and its European collaborators.

Subscribe to The JNS Daily Syndicate by email and never miss our top stories

The rail leading to the former Auschwitz II (Birkenau) concentration camp in Poland. Credit: Wikimedia Commons.

We bore witness to the inhumane conditions suffered by the Jews in Auschwitz-Birkenau, which existed for a single purpose: to eradicate the Jewish and Gypsy peoples. We visited mass graves in Lithuania, Latvia, Estonia and Poland, where hundreds of thousands of Jewish families perished at the hands of firing squads when their non-Jewish neighbors collaborated with or joined in when the German killing machine arrived. At the Rumbula Forest Memorial, we commemorated some of the 2.4 million Jews who were murdered in the hidden Holocaust by bullets—some betrayed by neighbors they had grown up alongside.

Far too many people view these places as simply historical sites, where you can learn something about the past but nothing about the future. Many, including some within the Jewish community, can’t grasp that the anti-Semitism that existed in Nazi Germany might happen again, especially in America.

Facing these horrors up close focused our attention on the relevance of the Holocaust to our present day. How can we ensure that “Never Again” isn’t just a slogan, but a mindset and an action plan?

Three lessons from our journey stand out.

First, events like the Holocaust don’t happen overnight. They result from a process of systematic racism, intimidation and discrimination that lasts over the course of many years.

Anti-Semitism had long been present across Europe. Nazi Germany harnessed that hatred to humiliate, marginalize and weaken the Jewish people as it prepared to unleash the largest genocide in history. During the first six years of Hitler’s rule, more than 400 decrees and regulations that Boycotted, Delegitimized and Sanctioned (BDS) all aspects of Jews’ public and private lives. Jews were dehumanized in the eyes of the public until non-Jews believed that genocide was a reasonable course of a final solution.

The parallels to recent events should not be lost on us. In the last two decades, America, and in particular, Europe have seen a steady rise in anti-Semitism from the radical right, the radical left and from radical Muslims. A growing alliance between radical leftists and radical Islamists has produced figures like Jeremy Corbyn, the head of the British Labour Party, who ignores and even espouses vile anti-Semitism.

This alliance has driven the rise of figures on the radical right in Germany, Poland, Italy, Estonia and elsewhere who are committed to deny the Holocaust and trade in anti-Semitic stereotypes.

It seems the only thing shared by all the radical movements is their hatred of the Jewish people.

While European governments publicly express strong support for the importance of protecting their Jewish communities, history tells us that nothing lasts forever. We witnessed this trend up close. In many of our meetings, European officials blamed the Holocaust solely on Germany—not the collaborationist leaders of their countries. None of these countries seemed to take ownership of their actions in the Holocaust. This denial has become public policy. For instance, a law recently passed in Poland made it illegal to acknowledge the Polish people’s complicity in death camps, outlawing the phrase “Polish death camps.” At the same time, some Germans, including the third-largest party in the parliament, are now working to minimize the Holocaust, claiming it was a “small spec of bird poop” in their 1,000 years of glorious history.

This brings us to our second lesson. We must recognize and fight against anti-Semitism with all of our power whenever we encounter it.

When we don’t act, we legitimize it, allowing it to become mainstream. We become an accomplice to its growth and influence.

Before and during World War II, Jewish communities across Europe cried out for help. World powers were overwhelmingly silent. Jews trying to flee were turned away by countries across Europe and the Americas, with Britain blocking immigration to what is now Israel.

Unfortunately, some Jewish communities in Europe and elsewhere now downplay or even ignore the dangers the Jewish people face. We found this in some of our conversations with European Jewish leaders, who expressed their unwavering confidence in their local government’s willingness and ability to protect them.

Jews in America today have the power to stand up, speak out and fight back against the anti-Semites. We should use this power now, before it’s no longer available.

This brings us to our third lesson. We must support Israel—the homeland of the Jewish people and ultimate insurance policy for all Jews.

Israel did not exist during the time of the Holocaust. It has already saved millions of Jews fleeing anti-Semitism around the world. In its infancy, Israel accepted Holocaust survivors from Displaced Persons camps. It launched countless operations to save Jews facing existential threats across the Middle East, North Africa, Asia and Europe. In the 1990s, the Jewish homeland welcomed approximately 1.6 million Jews from the former Soviet Union and Ethiopia, who had endured harsh anti-Semitism and hatred. More recently, rising anti-Semitism in Venezuela brought more than half of the country’s Jews to Israel.

Israel has changed the game when it comes to the security of the Jewish people. This point was driven home for us during the trip, by Maj. Gen. Amir Eshel, the former commander of the Israel Air Force, who accompanied us to Auschwitz. In 2003, Eshel led a squadron of IAF F-15s in a flyover of Auschwitz, issuing an eternal promise from the cockpit that the Israel Defense Forces represents “the shield of the Jewish people and its nation, Israel.”

Remembering the Holocaust is not enough. We must turn the tragedies of the past into lessons for the future. Nothing less than the continuation of the Jewish people is at stake. It’s in our hands to ensure that “Never Again” really means “Never Again.”

The writers are Israeli-American philanthropists, and co-founders of the Adam and Gila Milstein Family Foundation. Gila is the president of Stand By Me, and Adam is the national chairman of the Israeli American Council.