Shadow on the High Street

Dreams involving violence or threats can be quite unsettling and often reflect underlying anxieties or fears. Here's a possible interpretation of your dream:

1. The Man with the Gun: The man running up and down the high street shooting people may symbolize a perceived threat in your waking life. It could represent an external challenge or conflict you are trying to avoid or a worry about your safety or wellbeing. The act of shooting might symbolize a fear of aggression or confrontation.

2. Watching from a Distance: Your position, watching from a lane, suggests you feel like an observer in your life or a particular situation, not directly involved but still affected. It may imply a sense of helplessness or uncertainty about how to intervene or improve the situation.

3. Hiding Behind the Wall: The wall represents a barrier or defense you've put up in your life, which perhaps feels inadequate ("the wall wasn’t as deep as I thought"). This could suggest feelings of vulnerability or insecurity in the face of potential threats or challenges.

4. Being Visible but Not Seen: This may signify a fear of being exposed or vulnerable but also a peculiar sense of invisibility or being overlooked in your reality. It may reflect issues related to self-worth, recognition, or the fear of being misunderstood or underestimated.

5. The Homeless Man: The homeless man being dragged along might represent feelings of helplessness or dispossession, either in yourself or someone you care about. The realization that he was already dead could symbolize a sense of futility or inevitability in a situation you're dealing with.

6. Waking Up: The act of waking up after this sequence may indicate a subconscious desire to confront and resolve these anxieties. The jarring nature of waking from a distressing dream can often propel reflection on the matters at hand in waking life.

Overall, this dream could be pointing towards situations where you feel vulnerable, observe threats from a distance, and are aware of your limitations in dealing with these issues. It may be beneficial to reflect on your current life challenges, particularly those related to safety, vulnerability, and how you perceive threats around you. Perhaps there's a need to strengthen personal boundaries, seek support, or confront situations that make you feel underestimated or unrecognized.