From DogSoldier2's GW post

In the Godfather oranges foretell the death of a major player...

• In the first film, Tom Hagen and Woltz negotiate Johnny's movie status at a dinner table with a plate of oranges on it, and Woltz soon discovers his horse's severed head

• Don Vito Corleone is buying oranges from a fruit seller when he is attacked;

• Sonny drives past a billboard promoting Florida Oranges before he is attacked at the toll booth;

• Michael is seen eating an orange while discussing his plans of revenge for his father's assassination attempt with Tom Hagen;

• Oranges are placed on the table at the meeting of the Mafia bosses (and specifically in front of those who will be assassinated at the film's climax).

• Don Vito Corleone dies while eating an orange, as he plays with his young grandson.

• Tessio is also seen peeling an orange at Connie's wedding.

• Carlo, who is responsible for Sonny's death, is wearing an orange suit when Sonny beats him up.

• In Part II, Fanucci grabs an orange from a stand just before he is murdered by Vito in the hallway of his apartment building.

• Johnny Ola brings Michael an orange from Miami and is later killed.

• Michael is also seen eating an orange while in a meeting with Tom Hagen and Rocco Lampone, as they are planning the assassination of Hyman Roth, who is killed in the final scene.

• In Part III, before they are murdered by assassins in a helicopter, an orange rolls off the table. Finally, as Michael Corleone dies at the end of part III, he drops an orange and it rolls away.