Django ratings (Movie, 1966)

In the opening scene a lone man walks, behind him he drags a coffin. That man is Django. He rescues a woman from bandits and, later, arrives in a town ravaged by the same bandits. The scene for confrontation is set. But why does he drag that coffin everywhere and who, or what, is in it?

For a Few Dollars More
Total votes: 281,174
Average rating: 8.2 The Great Escape
Total votes: 263,224
Average rating: 8.2 The Sound of Music
Total votes: 267,469
Average rating: 8.1 Rosemary's Baby
Total votes: 243,439
Average rating: 8.0 A Fistful of Dollars
Total votes: 238,540
Average rating: 7.9 Cool Hand Luke
Total votes: 191,720
Average rating: 8.0 Goldfinger
Total votes: 206,114
Average rating: 7.7 The Birds
Total votes: 209,572
Average rating: 7.6 Persona
Total votes: 133,514
Average rating: 8.0 8½
Total votes: 127,191
Average rating: 8.0