For generations, many Germans and other Europeans believed that Jews was the cause of their failures, and even think that Jews resulting their country’s defeat in WWI. Hitler known that their hatred for Jews, so he used it to gain support for his racist. 1938, they passed Nuremberg Laws, deprived Jews of their rights to German citizenship and forbade marriages between Jews and non-Jews.
When the killings began, the troops move from town to town to find Jews, and killed them, even though they were women or children.
The Nazis built extermination camps equipped with huge gas chambers, it could kill as many as 6,000 people