This article was originally written by Martin Greenfield and posted at Foxnews.com:

Seventy years ago I was in a Nazi concentration camp.

Since then, I’ve seen tyrants and dictators enter and exit the global stage. Yet as the world prepares to mark the 70th anniversary of the Auschwitz liberation, it is perhaps well and right that we reflect on how the Holocaust shocked the moral imagination on a scale the world could scarcely fathom.

Why ponder such things? Because for far too many, the Holocaust remains a mystery.

A major poll taken last year of 53,000 people found that just 54 percent had ever heard of the Holocaust. Knowledge of Auschwitz is likely even more limited, particularly among young people. Past surveys have shown that nearly half of Britons had never heard of Auschwitz. Some schoolchildren even thought Auschwitz was a type of beer. Here at home in America a debate erupted last year when a teenager posted a smiling selfie at Auschwitz. Whatever your opinion on the appropriateness of her actions, I was at least pleased to be reminded that some young Americans still visit the Nazi concentration camp to learn history up close.

Read the rest of the article here.