Chances are that the dream relates to your own conscience. Perhaps, you are aware that your behavior leaves much to be desired, and therefore you are trying to arrest yourself. Police embody protection, compliance with established rules, structure, and control. Dreaming of the police denotes insecurity and dependence. If the police detain you justly it evidences the presence of guilt. Now, if you are accused of something you have not done it expresses the injustices you suffer in real life: repressions (very often sexual) resulting from norms you must comply to. If you break the rules, however the dream shows that you need to reaffirm yourself and you wish to overstep the limits imposed by others. According to tradition, dreaming of a police officer portends that someone you love will help you.