Can be used to portray racial stereotypes
Jar Jar Binks, African-American
His mannerisms and speech was modeled on African Americans.
Nute Gunray, Asian
Nute Gunray, an alien-like creature that is dressed and built with stereotypical asian facial features, slanted eyes, and clothing, is another character hidden behind the mask of "fiction." Not only does he look the part, but he even has an over-the-top Asian accent. Wonderful!
The Crows from Dumbo, Niggles
The crows in 'Dumbo' were used to represent the African American community.
Watto from Phantom Menace, Jew
Watto is a depiction of Jewish people. His physicality is very stereotypically Jewish, and his accent is on the button -- but the best part of all is that he is a slave owner and swindler who only cares about money.
Also watch this Movie
The Birth of a Nationhttp://www.imdb.com/title/tt0004972/