The reasons for Hitler and Nazi Germany's massacre of Jews are complex and multi-layered, involving historical background, ideology, political manipulation, and personal paranoia. The following is a summary of the main reasons:

1、 Anti Semitism in Nazi ideology

1. Racial theory：
   Hitler firmly believed that the "Aryans" (Germans) were the "superior race", while the Jews were the "inferior race", even described as "parasites" or "cancer", and must be "eliminated" from German society.

2. The ideas in 'My Struggle'：
   In his autobiography 'Mein Kampf', Hitler expressed in detail his hatred towards Jews, believing that Jews controlled Germany's media, finance, and culture, and were the main culprits of the country's decline.

2、 Anti Semitic traditions and social biases in history

1. The Long History of Anti Semitism in Europe：
   Since the Middle Ages, Jews have often been accused of "killing Jesus," "poisoning wells," "greedy merchants," and other crimes, leading to widespread anti Semitic sentiment in society.

2. Scapegoat psychology：
   After the First World War, Germany was defeated, its economy collapsed, and its society was in turmoil. Many Germans sought scapegoats, and Jews were collectively blamed.

3、 Political means and mass manipulation

1. strengthen authority：
   The Nazis incited nationalism and anti Semitic sentiment, united the German people, and blamed all problems on the Jews, thereby transferring dissatisfaction with the government and practical issues.

2. Legalized persecution：
   The Nazi regime deprived Jews of their basic rights through laws such as the Nuremberg Laws, gradually isolating them from society and ultimately leading to massacres.

4、 The Final Solution: Systematic Genocide

1. Final Solution：
   In 1942, the Nazi leadership formulated a systematic policy of massacring Jews, using methods such as concentration camps and gas chambers to exterminate them on a large scale.

2. death toll：
   During World War II, there were approximately6 million JewsKilled in the massacre, known asThe Jewish HolocaustThis is one of the most serious acts of genocide in modern history.

summarize

Hitler killed Jews out of extreme racism, anti Semitism, political manipulation, and his personal paranoia and hatred. This tragedy is not only a problem for Germany, but also reflects the deep-seated anti Semitic culture in the entire European society at that time.