What is the foreshadowing in blues no mockin bird?

The opening scene foreshadows Tom’s fate: as Tom, his brother Horace, and their aunt are settling an insurance claim with a railroad worker following one of Tom’s misadventures resulting in a broken arm, the claim investigator says to Aunt Sarah, his aunt, “‘Boy like Tom here sure could come handy at claim settling time. Maybe some day we can count on you too, boy” and Horace jokes grimly “‘Sho he will—they’ll claim him’” (Baldwin 5). This conversation highlights how Black men and boys were devalued and disposable; Horace's response foreshadows their worst fears coming true in a tragic death for Tom