Gangs of New York

The film that I've seen is Gangs of New York. It talks about The city when the natives were living here and kill every immigrant that arrives there.
The Butcher is the boss of Five Points, an important place of the city.
One of these immigrants, the young Irish Amsterdam Vallon, will try to avenge the death of his father who was murdered at the hands of the Butcher.
I don't know if he can do it, because I don't saw the end of the film.