If you can identify what the block symbolizes, you will know what it is that prevents you from reaching the fulfilment you desire.
If there are policemen or soldiers there, do they represent your super-ego (‘conscience’)? If so, bear in mind that our inhibitions are not always rational and do not always serve our best interests. The main thing is to enter into dialogue with those who have made the road blocks: ask them why they are blocking your way, and who put them up to it?... A Dictionary of Dream Symbols
Uniforms are symbols of depersonalized authority in dreams, so if your dream featured images such as soldiers in uniform or policemen on duty and you were the only one not wearing a uniform, this may reflect your waking sense that you are falling out of line in some way or have deviated from what is expected from you. Did you try to fit in or did you assert your individuality and non-conformist nature?
If members of various professional bodies appeared in your dream, such as doctors, dentists or pilots, try to make a link with the profession they represent and the relevant area of your waking life, as your unconscious may be offering you inspirational or helpful advice.
When the main point of interest in your dream is the occupation or profession, there is typically a good reason why your unconscious has highlighted that particular job. For example, members of the caring professions in dreams, such as nurses, nuns, charity or voluntary workers, may suggest a more compassionate side to your nature, or the side of yourself that has a vocation in life. In men, these images may suggest the importance of non-sexual relationships. For more information about specific occupations and people at work, see SCHOOL AND WORK.... The Element Encyclopedia
If a detective appears in your dream, this may be a sign that you may be attempting to solve an issue or are worrying about something that needs to be cleared up.
If a detective is following you within a dream, it may be a sign that other people want to know more about you. A dream about a police officer or army officer may suggest the importance of following correct procedure or correct behavior. Perhaps an aspect of your behavior in waking life is upsetting others?
Policemen can also represent the father figure, whilst a policewoman can bring to mind a dominant female in your life. A fireman relates to how you deal with your emotions or outbursts of energy.... The Element Encyclopedia