I would have taken a calmer approach and politely asked Mr. Greenspan where to invest my dollars. Not only would the cops left me in peaceful chat with the spinmaster but Greenie would have smiled, signed the book and shook my hand after I told him that I wanted to be a major banker like him. Inside intelligence.
Based on the many poor souls who have been tazered by police brutality in this county, I would just use inside intelligence to peacefully resolve the issue quietly.