Virtually every viewpoint deserves a hearing. Welcome differences and use conflict . Disagreement means first of all the opportunity to learn about experiences and thought different from your own. Learning about different experiences and thought often serves to help you understand your own experiences and views more clearly. Be clear that your disagreement is with a viewpoint - not with the person's identity.
People often believe what they believe for some good reason.
Only after you have gone through these four steps should you raise your objections or disagreements with the other position. No put-downs of others will be tolerated . Silence and closed minds are not the point of liberal arts education. Usually I assign a letter grade, e.g. Your grade on that assignment is then multiplied by the percentage figure, resulting in a certain number of points.