Why did Hitler want to destroy the Jewish people?

he was part jew and hated his backround He specifically targeted Jews, but didn't EXCLUSIVELY target Jews. He also despised Gypsies, homosexuals, slavs and Communists.

Because Germany was in an economic depression and existing prejudices and blame were already held by some people aimed toward Jews, some of whom held wealth through banking, owning property, etc. for the depression. So Hitler was able to use those as a convenient political vehicle to get support from Germans for his political power. The Jewish people of Germany were a political scapegoat for Germany's problems.