From my understanding, many German citizens knew that the Jewish concentration camps existed, and other countries knew about Germany's persecution of Jewish people, at least as far as political policy goes. At what point were the atrocities fully realized by the rest of the modern world? Was it possible that people of the time simply did not see it as the same atrocity as we do today? For example, is it possible that at least some of the general reaction that is considered to be appropriate to the Holocaust is more of a modern perspective, since it is now much easier to separate ourselves from the people alive at that time?