Othello behind Cassio and badly cuts his leg. In the darkness, Iago manages to hide his identity, and when Lodovico and Gratiano hear Cassio's cries for help, Iago joins them. When Cassio identifies Roderigo as one of his attackers, Iago secretly stabs Roderigo to stop him revealing the plot. Iago then accuses Bianca of the failed conspiracy to kill Cassio. Othello confronts Desdemona, and then strangles her in their bed. When Emilia arrives, Desdemona defends her husband before dying, and Othello accuses Desdemona of adultery. Emilia calls for help. The former governor Montano arrives, with Gratiano and Iago. When Othello mentions
Othello that opposition of Brabantio to Desdemona marrying Othello-a respected and honoured general-cannot make sense except in racial terms, citing the scene where Brabantio accuses Othello of using witchcraft to make his daughter fall in love with him, saying it is "unnatural" for Desdemona to desire Othello's "sooty bosom". Singh argued that since people with dark complexions are common in the Mediterranean area that for a Venetian senator like Brabantio to oppose Desdemona marrying Othello for merely being swarthy makes no sense, and that character of Othello was intended to be black. Michael Neill, editor of "The Oxford Shakespeare", notes that