During the summer of 1965, between my junior and senior years at UCLA, I traveled to Western Europe with a friend and, among other things, visited the former concentration camp at Dachau, in the German state of Bavaria not far from Munich. This event changed my life, because it brought home to me man's potential inhumanity to man.
Dachau was one of the first extermination camps established by Adolf Hitler. It was where thousands of Jews, gypsies and other "undesirables" (in Hitler's mind) were gassed to death, and then cremated en masse. And it was also a place where perverse and sadistic "experiments" were performed on human beings by demented so-called doctors.
In other words, this was a place where terrible things were done with the sanction of the laws of the time. Dachau should always stand as an example of what can happen without the vigilance of good people. Therefore, it is a place that should never be forgotten.