Wrongdoing, Deception or Oppression on the part of the Ruler

The blameworthy are those who oppress their fellow men and conduct themselves with wickedness and injustice in the land. It is they who will have painful punishment. 42:42

Then imagine that time when these people will start arguing with each other in the fire, and the weak followers will say to the arrogant leaders: “We were your followers: can you now save us from some of these flames?” 40:47

The arrogant leaders will reply: “We are all in it together! Allah has already judged between His servants.” 40:48

Meaning:-
Oppress: abuse, to burden with cruel or unjust impositions
Wickedness: the quality of being evil or morally wrong.

Arrogant: unpleasantly proud, a sense of superiority, self-importance, having or revealing an exaggerated sense of one’s own importance or abilities.