How'd that get there? I found this at the end of Pier 45.
If, while walking through the city, you pay attention to what's on the sidewalk (and you'd be unwise not to), you'll notice any number of items lying in the most unlikely places. For me, it's a bit of a game to create the back stories to those things. Most often, the setting to the story is the middle of the night, and various and sundry characters play the lead role, pursuing deeds of darkness, romance, and adventure.
And this glove? It was placed there by a conscientious junkie, don't you agree?