6. a small strip of coloured cloth signifying membership of an order or award of military decoration, prize, or other distinction. 7. a small, usually looped, strip of coloured cloth worn to signify support for a charity or cause: a red AIDS ribbon.
The books burned were Jewish, Marxist, Bolshevik, or other disreputable or non-German books. These included the works of Heinrich Heine, Sigmund Freud, Thomas Mann, Erich Maria Remarque, Albert Einstein, Walter Benjamin, Karl Marx, Jack London and Margaret Sanger.
Mildred is missing watching her TV family and she is afraid someone will come to. burn the house down once they find books in their possession. Montag is hoping these books will lead to an understanding. An understanding of book lovers like Clarisse and Faber, and why people in the society hate books. In this scene Montag reads over each line aloud, analyzes it (trying to find deeper meaning) while Mildred says they should burn the books.