What is an example of symbolism in the story, To Da-duh in Memoriam?

The story's most important symbol is sugar cane. To Da-duh, this plant represents a source of beauty and pride, but the narrator sees the cane fields as threatening. She walks among them feeling that the canes are "clashing like swords above my cowering head"; the narrator's reaction to the canes reflects their history as an impetus for the slave trade and the ensuing exploitation of countless Africans.