Oppression is the arbitrary and cruel exercise of power. While the term is usually used to describe wrongful acts of government, oppression is rarely limited solely to government action. Oppression is most commonly felt and expressed by a widespread, if unconscious, assumption that a certain class of people are inferior.
Oppression is often used to mean a certain group is being kept down by unjust use of force or authority and has been referred to as "systematic oppression". See: domination and imperialism.
The Universal Declaration of Human Rights and the concept of Human Rights in general were designed to eradicate oppression by giving a clear articulation of what limits should be placed on the power of any entity to control an individual or group of people.
A hierarchy of oppression is a ranking or hierarchy of oppressions according to arbitrariness and cruelty or according to the negative effects on oppressed communities. Hierarchies of oppression are generally discredited though widespread and often unstated.
Also thou shalt not oppress a stranger for ye know the heart of a stranger seeing ye were strangers in the land of Egypt
Bible in Basic English: Do not be hard on the man from a strange country who is living among you; for you have had experience of the feelings of one who is far from the land of his birth, because you yourselves were living in Egypt, in a strange land.
JPS Tanakh: And a stranger shalt thou not oppress; for ye know the heart of a stranger, seeing ye were strangers in the land of Egypt.
And I will feed them that oppress thee with their own flesh; and they shall be drunken with their own blood, as with sweet wine: and all flesh shall know that I, Jehovah, am thy Saviour, and thy Redeemer, the Mighty One of Jacob.
And I will feed them that oppress thee with their own flesh; and they shall be drunken with their own blood, as with sweet wine: and all flesh shall know that I the LORD am thy Saviour and thy Redeemer, the mighty One of Jacob.
And I will feed them that oppress thee with their own flesh; and they shall be drunken with their own blood, as with sweet wine: and all flesh shall know that I the LORD am thy Savior and thy Redeemer, the mighty One of Jacob.