How does Shakespeare introduced the questions of class and race in Act 1 - Othello essay

In Shakespeare's play on Othello, the 1st Act introduces class and race as something very important by that time. Racism is rampant; Othello, being of black skin color and of different features compared to other men, was isolated and was regarded as 'barbaric'. However, Othello was a nobleman and a brilliant high-ranking soldier, thus, his social status was regarded as a very important factor to being respected.