"If the Jews are God’s ‘chosen people,’ why have they been so oppressed?"
Israel’s blessings were dependent upon her obedience. If the nation sinned, it would be chastened. This is God’s warning to the Jews, followed by His promised restoration: "The Lord shall scatter you among all people, from the one end of the earth to the other, and there you shall serve other gods, which neither you nor your fathers have known, even wood and stone. And among these nations shall you find no ease, neither shall the sole of your foot have rest: but the Lord shall give you there a trembling heart, and failing eyes, and sorrow of mind" (Deuteronomy 28:64,65). "In the latter years you shall come into the land that is brought back from the sword, and is gathered out of many people, against the mountains of Israel, which have been always waste: but it is brought forth out of the nations, and they shall dwell safely all of them" (Ezekiel 38:8).