Ghost Dog: The Way of the Samurai (1999)

In Jersey City, an African American hit man follows "Hagakure: The Way of the Samurai." He lives alone, in simplicity with homing pigeons for company, calling himself Ghost Dog. His master, who saved his life eight years ago, is part of the local mob. When the boss' daughter witnesses one of Ghost Dog's hits, he becomes expendable. The first victims are his birds, and in response, Ghost Dog goes right at his attackers but does not want to harm his master or the young woman... (imdb)