Gangs Of New York (2002, Martin Scorsese) Starring Leonardo DiCaprio, Daniel Day - Lewis and Cameron Diaz.    

Gangs of New York addresses the fact of people over seas Immigrating over to New York in the 1800s such as Italians, Irish, Jews and Africans . The film takes place in 1863 and shows the two major issues of the era in New York which were Irish immigration and other immigration  to the city and the ongoing Civil war in America at that time. Martin Scorsese highlights the problems of immigration  which is crime affected  by the  immigrants joining gangs and fighting the native born gangs creating damage and death with in the streets of New York.