This clip says it all. In six years in the city, including residing in two different burroughs, I never saw graffiti inside a subway car anything like this:
It might also surprise you to know that around '99 or so, New York ranked No. 1 as the safest big city in America. Hard to believe, I know. Whether you love or hate Rudy Giuliani, he was widely popular as Mayor there until he made the controversial move of pushing for the removal of a work of art from the Brooklyn Art Museum. Of course, his lasting legacy will be his cool-handed leadership during and after the events of September 11, 2001. In the end, I'm sure most New Yorkers would agree he did a great deal to make the city a better place.
See the full blog-post about that subway ride here: