Answer:
It's kinda long so read my explanation!
Step-by-step explanation:
Okay so, Jews have always been persecuted in many parts of the world, especially in Europe which is predominantly Christian. When World War 1 ended and Germany had to take the blame and pay for all the damage, people in Germany were NOT satisfied. In fact, Hitler saw it as a chance to not only rise to power, but he used the Jews as a scapegoat. There's not a clear explanation as to why Hitler hated Jews, but he used them as a way to gain power. He also served in World War 1 and he was a very extreme nationalist, so clearly he was mentally affected and his nationalistic beliefs played a large role in this perspective. So that's that, but the Nazi party was who supported Hitler and of course they're going to support what he supports and persecute who he persecutes. Many children and even adults were brainwashed to stay loyal and believe in him. Also, he was a very passionate person, as sick as that man was, his speeches were very convincing and appealed to everyone's emotions. Once more, Germany was in toils at this time period, the were economically unstable so having someone to blame was something they kind of took to ease their suffering. Hitler also did not support communism and he threw the blame on the Jew's and basically acted as though all of them created and supported communism. The more common concept we're all taught in school was that Hitler wanted the "perfect" or "ideal" race, he believed all the impure people must be eradicated in order for Germany to be in power. There's more to the antisemitism Hitler possessed, but I can't think of them from the top of my head.
All in all, historical evidence points to the main reason that Jews were persecuted was because it was a very unfortunate time for many in Germany, and they needed someone to throw the blame on.