'Oppressors' in the Bible

My eye wastes away because of vexation; it grows old because of all my oppressors.

Rise up, O Yahweh, in your anger, and lift yourself up against the wrath of my oppressors, and awake for me, since you have commanded judgment.

You prepare before me a table in the presence of my oppressors. You anoint my head with oil; my cup [is] overflowing.

[As] with a shattering in my bones my oppressors taunt me, while they say to me {all day}, "Where [is] your God?"

I have done justice and righteousness; do not leave me to my oppressors.