Whenever thereâs an analysis or discussion about how much people know about the Holocaust, the focus is often on what they donât know. For instance, a 2018 survey of 1,350 people age 18 and older found that 11% of U.S. adults and 22% of millennials had not heard of â or were not sure if they had heard of â the Holocaust. Almost half of U.S. adults â 45% â and millennials â 49% â could not name one concentration camp or ghetto that was established in Europe during the Holocaust, the survey found. The survey also showed how thereâs an overwhelm...