1. The Lord is a God of retribution; O God of retribution, reveal Yourself!
2. Judge of the earth, arise; render to the arrogant their recompense.
3. How long shall the wicked, O Lord, how long shall the wicked exult?
4. They continuously speak insolently; all the evildoers act arrogantly.
5. They crush Your people, O Lord, and oppress Your heritage.

Tehillim Ohel Yoseph Yitzchok (Kehot Publication Society)

Tehillim is recited by Jewish people collectively and individually, as the desire occurs to offer praise and thanksgiving to G-d; or alternitavely, in times of crisis and need, as a form of supplication, and even as a venue to express regret for sin.

6. They kill the widow and the stranger, and murder the orphans.
7. And they say, "The Lord does not see, the God of Jacob does not perceive.”
8. Understand, you senseless among the people; you fools, when will you become wise?
9. Shall He who implants the ear not hear? Shall He who forms the eye not see?
10. Shall He who chastises nations not punish? Shall He who imparts knowledge to man [not know]?
11. The Lord knows the thoughts of man, that they are naught.
12. Fortunate is the man whom You chastise, O Lord, and instruct him in Your Torah,
13. bestowing upon him tranquillity in times of adversity, until the pit is dug for the wicked.
14. For the Lord will not abandon His people, nor forsake His heritage.
15. For judgment shall again be consonant with justice, and all the upright in heart will pursue it.
16. Who would rise up for me against the wicked ones; who would stand up for me against the evildoers?
17. Had the Lord not been a help to me, my soul would have soon dwelt in the silence [of the grave].
18. When I thought that my foot was slipping, Your kindness, O Lord, supported me.
19. When my [worrisome] thoughts multiply within me, Your consolation delights my soul.
20. Can one in the seat of evil, one who makes iniquity into law, consort with You?
21. They band together against the life of the righteous, and condemn innocent blood.
22. The Lord has been my stronghold; my God, the strength of my refuge.
23. He will turn their violence against them and destroy them through their own wickedness; the Lord, our God, will destroy them.