I'm not too sure but I think the song was written about the people who had to say goodbye to loved ones at friedrichstrasse station on the east to west border. If anyone is ever in Berlin I'd thoroughly recommend a visit to the museum there. I'm sure it's called the palace of tears.
I got the chance last year whilst in Berlin to visit the Bowie exhibition, absolutely fascinating.
The word legend is banded around a lot these days. A remarkable human being who has lived the life of ten people.
Absolutely gutted.
RIP.