Twenty-two percent of millennials said they haven't heard of the Holocaust or are not sure whether they've heard of it - twice the percentage of USA adults as a whole who said the same.
More than 12,000 marchers - including Israel Defense Force chief Gadi Eisenkot and the heads of Israel's Mossad spy agency and Shin Bet security service - participated in a two-mile march from the site of the Auschwitz concentration camp to the Birkenau extermination camp, which housed Nazi gas chambers.
Despite the concerning results, the Claims Conference found that almost all Americans (93%) wished for additional Holocaust education.
The study, commissioned by the Conference on Jewish Material Claims Against Germany, revealed considerable ignorance about the World War ll genocide of the Jews. This was true for 41 percent of millennials.More news: Jailed Reuters journalists in Myanmar fail to win their freedom
On the eve of Holocaust Remembrance Day, Netanyahu drew comparisons between the Nazi Regime and present-day Iran, issuing a stern warning to "not test the determination of the State of Israel".
Fifty-eight percent said they believe something like the Holocaust could happen again.
She told how Dr. Josef Mengele did the selection of people deciding who would live and who would die.
These figures are especially concerning given the reported rise in hate group numbers, activity and confidence in recent years.More news: Players from Around the NBA React to Andre Ingram's Debut
Poland was once home to Europe's largest Jewish population, numbering around three million people, or 10 percent of the population in 1939. Sixty-eight percent of USA adults said anti-Semitism exists today, and 34 percent said there are many neo-Nazis now present in the U.S. Well, if you frequent Holocaust museums, you belong to a depressingly small minority: the survey found that most Americans (80%) have never visited a Holocaust museum and two-thirds (66%) do not know a Holocaust survivor or heard about one.
"On the occasion of Yom HaShoah, it is vital to open a dialogue on the state of Holocaust awareness so that the lessons learned inform the next generation. We are alarmed that today's generation lacks some of the basic knowledge about these atrocities".
See photos of Israelis remembering the Holocaust below.
The survey was conducted by Schoen Consulting between February 23-27 with a randomly selected demographically representative sample of 1,350 Americans.More news: Donald Trump warns Russian Federation of 'nice, smart' missile attack on Syria