A study released Thursday says 22 percent of surveyed millennials are unaware or unsure of what the Holocaust is.
The study was conducted by the Conference on Jewish Material Claims Against Germany. Eleven percent of US adults haven't heard or are unsure of what the Holocaust was.
Sixty-six percent of millennials and 41 percent of US adults don't know what Auschwitz is.
Six million Jews were killed in the Holocaust, and the study found one third of all Americans and 4/10 Millennials think 2 million or fewer Jews were killed.
And though a majority (58 percent) of Americans believe something like the Holocaust could happen again, 70 percent say fewer people seem to care about the Holocaust than they used to.