Yes, the lady in Cullen's poem is a deeply prejudiced and ignorant person, who doesn't want to really get to know black people as they are. Those prejudices seem to be so deeply engraved in collective memory that black people are associated with slavery, menial jobs, and intellectual inferiority. Hurston argues that media have the power to solve this problem. Hurston writes: "It is assumed that all non-Anglo-Saxons are uncomplicated stereotypes. Everybody knows all about them. They are lay figures mounted in the museum where all may take them in at a glance. They are made of bent wires without insides at all. So how could anybody write a book about the non-existent?"
Similarly, in Cullen's short and poignant poem, the lady believes that even in heaven black people will be assigned the same kind of duty that they have on Earth, in her opinion. It's as if they aren't capable of doing anything else, nor are they entitled to anything else above that.
The sentence is not subjunctive because it actually happened if the person wished or desired that thing to happen then it will be subjunctive.
Hope this helps :)
To analyze why the poem corresponds to the genre of medieval romance we must go back to the time of the creation of the romanecero. The Romancero suggested, as it had done in the Golden Age, the imagination of the medievalizing poets of European and Hispanic Romanticism. During the 19th century the translations of these Spanish ballads to English, French and German were frequent. The romancero influenced some poems by Victor Hugo. In Austria Barbara Elisabeth Glück wrote a Romancero (1845) and in Germany Heinrich Heine imitated it with another Romanzero (1851).
The romance is a short epic-lyric poem intended for singing. It is Epic, because in romance it is narrated, something is told; Lyrical, because at the same time that story is impregnated with subjectivity (feelings, memories, dreams, etc.) of the poet and the story is then made singing.
But also in romances, as in the epic, often the Narration gives way to the word, to the discourse of the characters. The story is transformed into action, into drama. And so are these short poems integrated into Classical literary genres: the epic, the lyrical and the dramatic.
