This is then Governor of New York Mario Cuomo's address to the 1984 Democratic Convention in San Francisco. It's referred to as his "Tale of Two Cities" speech. I remember hearing it at the time and thought that it was one of the more inspirational speeches I had heard. It still is. Unfortunately, it could be given today and it would still apply - only more so after too many years of the same policies which Reagan championed.
While not the entire speech, you do catch the overall thrust. For a complete transcript, click here.