I am not a Polack. People from Poland are Poles, not Polacks. But what I am is a one hundred percent American, born and raised in the greatest country on earth and proud as hell of it, so don’t ever call me a Polack.
Blanche makes derogatory and ignorant remarks about Stanley’s Polish ethnicity throughout the play, implying that it makes him stupid and coarse. In Scene Eight, Stanley finally snaps and speaks these words, correcting Blanche’s many misapprehensions and forcefully exposing her as an uninformed bigot. His declaration of being a proud American carries great thematic weight, for Stanley does indeed represent the new American society, which is composed of upwardly mobile immigrants. Blanche is a relic in the new America. The Southern landed aristocracy from which she assumes her sense of superiority no longer has a viable presence in the American economy, so Blanche is disenfranchised monetarily and socially.