Reverse discrimination refers to when people are treated unfairly because they are part of a group that is less commonly discriminated against in the past. For example, let's say a group of people being discriminated against are people with red hair. That group might get special treatment, like more job opportunities, because they have been treated unfairly in the past. Reverse discrimination is unfair to other people who don't have red hair because it gives them less chance to get a job. It's important to be fair to everyone regardless of their background, and not give one group more advantages than another.