She lied in an effort to get rid of her own guilt. Now I say guilt, gentlemen, because it was guilt that motivated her. She has committed no crime, she has merely broken a rigid and time-honored code of our society. A code so severe that whoever breaks it is hounded from our midst as unfit to live with. She must destroy the evidence of her offense. But what was the evidence of her offense? Tom Robinson - a human being. She must put Tom Robinson away from her. Tom Robinson was for her, a daily reminder of what she did. Now what did she do? She tempted a Negro. She was white, and she tempted a Negro. She did something that in our society is unspeakable. She kissed a black man. Not an old uncle, but a strong, young Negro man. No code mattered to her before she broke it, but it came crashing down on her afterwards.
She lied in an effort to get rid of her own guilt. Now I say guilt, gentlemen, because it was guilt that motivated her. She has committed no crime, she has merely broken a rigid and time-honored code of our society. A code so severe that whoever breaks it is hounded from our midst as unfit to live with. She must destroy the evidence of her offense. But what was the evidence of her offense? Tom Robinson - a human being. She must put Tom Robinson away from her. Tom Robinson was for her, a daily reminder of what she did. Now what did she do? She tempted a Negro. She was white, and she tempted a Negro. She did something that in our society is unspeakable. She kissed a black man. Not an old uncle, but a strong, young Negro man. No code mattered to her before she broke it, but it came crashing down on her afterwards.
http://www.moviequotedb.com/movies/to-kill-a-mockingbird/quote_29653.html