That long ago? Judging from responses to "man on the street" interviews by roving reporters on TV shows such as Watters' World, one would think that schools start history in 2014.
I ended up explaining what the Berlin Wall was in contrast to the American border to my daughters 4th-6th grade friends. They couldn’t understand the difference, and they only knew World War 2 as defeating Nazis and nuking Japan, nothing really of cold war except we invaded countries and the world could end in nuclear war.
I explained that the Berlin Wall was built to keep people in, while an American border wall would be to keep people out. And that if we have to build a wall to keep people OUT, that proves we aren’t as bad as the history books are telling you.