There is a simple reason that these things go on, Erin. This means that the reason the Holocaust went on for so long is because people were indifferent to it. People did not want to face reality or own up to it. As for your question, it is impossible to answer that question.
Some people use others to blame for their problems.
That's how the Holocaust started. Adolf Hitler blamed the Jews for the depression in Europe. He used them as a scapegoat because they were never really accepted in society and ouwld make a perfect target.