In the map of New York’s most forsaken places, it would be hard to top the Freeman Street stop on the No. 2 line in the Bronx, late on a February afternoon. Around 4:30 last Thursday, Robert Taylor stood on the station’s elevated platform, taking a picture of a train.

“A few buildings in place,” he noted. “Nice little cloud cover overhead. I usually use them as wallpaper on my computer.”

Finished with his camera, Mr. Taylor, 30, was about to board the train when a police officer called to him. He stepped back from the train.

“The cop wanted my ID, and I showed it to him,” Mr. Taylor said. “He told me I couldn’t take the pictures. I told him that’s not true, that the rules permitted it. He said I was wrong. I said, ‘I’m willing to bet your paycheck.’ ”