Demons 
To dream about demons indicates opposition, incomprehension, and anguish regarding your 'shadow' self. You should be aware of any gratification or sexual desires that could be against common sense. Due to this, your health could be in jeopardy.
To dream about being possessed by demons suggest a sense of being out of control.
Demonstration
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.
Marching
To dream that you are marching to the beat of music suggests that you work well with others to accomplish goals. It also indicates that you may want to serve your country and display your patriotism. Perhaps you prefer to work for your city or municipal region.
To see people marching in your dream also implies that you are looking to become partners or colleagues with city or municipal officials.
- 1