1- To dream of being arrested suggests the restraint of one’s natural self-expression by moral judgements or questions of right or wrong from other people, lo dream of arresting someone else would indicate our instinctive disapproval of that part of ourselves which is represented by that person in the dream.
2- Psychologically, we are unsure of our motives in an action we are contemplating. We should slop and carefully consider our behaviour before we act.
3- There is a need for authority.... Ten Thousand Dream Dictionary
There are times when spiritually we are aware we are not acting according to our own beliefs. There is a need for a higher authority and we need to be stopped from coming to harm or creating problems. That higher authority is often the moral or spiritual aspect of ourselves.... Dream Meanings of Versatile
Psychological / emotional perspective: When in everyday life we are unsure of our motives in an action we are contemplating, dreaming of being arrested suggests we should stop and carefully consider our behaviour before we act.... Dream Meanings of Versatile
If you dream the police are arresting you for a crime of which you are innocent, you will successfully win out over your rivals.
If you are guilty of the crime in your dream though, it foretells that a season of unfortunate incidents is ahead of you. Dreams of seeing others arrested means you want to make changes in your life, but you are nervous about not succeeeding.... My Dream Interpretation