As protests and encampments condemning Israel in the aftermath of the Oct. 7 massacre revealed a shocking lack of knowledge among young demonstrators, a deeper dive paints an even more damning picture.

A recent poll by the DailyMail.com/J.L. Partners found than one in 10 of Americans (11%) believe that Adolph Hitler, the German dictator responsible for the murder of 6 million Jews, had some “good ideas.”

Breaking it down by age, 21% of those under the age of 29 said Hitler had good ideas, compared with 16% of those between the ages of 30 and 49, 7% for voters between 50 and 64 and just 5% for those over 65.

This, unfortunately, explains a lot about the rise in antisemitism, especially on America’s campuses.

If 21% of the under-29 set sees one of the most evil figures in history responsible for unspeakable atrocities against the Jewish people as someone with “good ideas,” then something is seriously wrong.

Antisemitic hate crimes aren’t letting up. Early on Monday, stickers showing the Israeli flag with a swastika instead of the Star of David were posted in and around the Harvard University campus. Repugnant, reprehensible and sadly indicative of a cohort whose ignorance makes it ripe to be swayed by propaganda and twisted by prejudice.

A 2020 survey found a “worrying lack of basic Holocaust knowledge” among adults under 40, including over 1 in 10 respondents who did not recall ever having heard the word “Holocaust” before.

The survey, as NBC News reported, was touted as the first 50-state survey of Holocaust knowledge among millennials and Generation Z. It showed that many respondents were unclear about the basic facts of the genocide.

Sixty-three percent of those surveyed did not know that 6 million Jews were murdered in the Holocaust, and over half of those thought the death toll was fewer than 2 million. Over 40,000 concentration camps and ghettos were established during World War II, but nearly half of U.S. respondents could not name a single one.

One of the most disturbing revelations, the survey commissioned by the Conference on Jewish Material Claims Against Germany found, was that 11% of respondents believe Jews caused the Holocaust.

“Blame the Jews” is a centuries-old trope, reused and refashioned by new generations eager to flex fresh hate. It’s no wonder that there are those who blame Israel for the Oct. 7 attacks by Hamas.

The way to fight ignorance, and ultimately the hate it can spawn, is through education. There is no excuse for Americans not to know about the Holocaust, what happened, and who perpetrated it.

Massachusetts is fortunate, as former Gov. Charlie Baker signed the genocide education bill into law in 2021, mandating that students in the state’s middle and high schools about the Holocaust and other genocides around the world.

But a majority of states don’t have such laws. As Donald Trump and Kamala Harris vie for the White House, the push for universal Holocaust and genocide education should be part of their programs, as it should for down-ballot candidates.

There’s no place for antisemitism in America. It’s time our students got the lesson.

Editorial cartoon by Bob Gorrell (Creators Syndicate)