An outward display, whether formal or informal
To dream of a major demonstration involving placards and police is your unconscious making it very clear that you may be involved in a situation that will not serve your highest good.
To dream of a small demonstration of a kitchen implement or sporting skill indicates that you will find yourself becoming interested in an unusual hobby that could give you hours of joy.
Were you participating or watching? What were your feelings during the dream? Who demonstrated for what? And the most important question that you have to ask yourself is: What would I be demanding or wishing for.7 What purpose motivates me.7