"They teach me to honor you and be loyal to you as your daughter. But here is my husband
Act 2 Scene 3
What is the matter here!?
Let me go, sir, or I'll hit you on the head!
Act 3 Scene 3
I think so, too.
Concerning Micheal Cassio, I would swear he is trustworthy.
Brabantio, Desdemona's father thinks that Othello used witchcraft on Desdemona to get with her. So Othello asks for Desdemona to speak for Othello to her father. So the father gets angry.
Act 4 Scene 1
"Everyone thinks you're gonna marry her."
Iago gets Cassio drunk that way he will cause a scene and a fight. In which he was able to do. Cassio and Montano get into a fight in which Cassio makes Montano bleed.
Act 5 Scene 1
"Oh, lieutenant! What villains have done this?"
Iago is manipulating Othello in believing that he is trustworthy with his friends. But Iago at the same time makes Othello believe that he's not telling him everything on his mind.
Act 5 Scene 2
Iago is tricking Othello that Cassio is gonna confess that him and Desdemona are having an affair. When in reality Iago is talking to Cassio about Bianca and how people are thinking they're gonna marry.
Iago and Roderigo stab and fight Cassio without Cassio knowing it was Iago. Cassio stabs Roderigo back injuring him in the mean time. Cassio yells out for help while Iago pretends to come and save him.
Othello kills Desdemona thinking she cheated on him with Cassio. Emilia is calling for Othello.