Othello Questions

I want to discuss two things from the story Othello. First thing i want to discuss why do Iago, Roderigo, and Brabantio all hate Othello (the Moor). Obviously because they are racist against black people. Roderigo showed how he contributed to his hatred toward Othello because he called him "thick-lips". He was inferring that since Othello was black he had big lips. Iago thinks that Othello is not good enough for Brabantos daughter because he is black. And Barbantio thinks that Othello shouldn't be dating his daughter .The other thing i want to discuss is the what kind of a person would I expect Othello to be given the way they are talking about him. I expect Othello to be a very horrible guy. I expect him to treat Desdemona wrong because they always say how he shouldn't be with her. Also I expect him to be an average person because they just talk about him like he is anyone else and not like he's the moore. they also don't show 
othello any respect for him to be the Moore.