The play opens on a warm Venetian night, where a conversation is underway between Roderigo, a gentleman, and Iago, a soldier under Othello's command. Roderigo, who has been courting Desdemona, is upset with the news that she has eloped with Othello, a great Moorish warrior who is now a general in the service of the ruler of Venice.
The dramatic device that Shakespeare used when he wrote the scene stated above, which takes place after one of the most tragic moments in the play is the comic relief that is letter D. I hope my answer helps you.
The snake is Power's mother's long heavy braided hair that she cut several years ago that is in one heavy braid. She keeps it there because she left the reservations and it reminder of her roots or as a moment of her traditional past