Race and Prejudice

Iago says an

An old black ram is tupping your white ewe

Dehumanises Othello and Desdemona's marriage in overtly racist terms

Iago says youll have

"you'll have your daughter covered with a Barbary horse... you'll have your nephews neigh to you"

Othello says … her

"Her name, that was as fresh As Dian's visage, is now begrimed and black As mine own face"

Othello turns the racist imagery used against him back on himself as jealousy corrupts him

Iago the

the devil will make a grandsire of you" links to Othello's blackness to demonic imagery, a common Jacobean racial trope cavabs