In cognitive dissonance, the injunctive norm entails a situation where individuals face psychological discomfort when faced with two or more inconsistent beliefs or opinions. For example, in the United States, members of the dominant culture often think highly of themselves and regard themselves as decent people who excel at many desirable attributes. And they automatically feel negative about those that do not practice the predominant culture.
This leads to implicit racism that is mostly associated with the early generation. Explicit racism, on the other hand, is intentionally based and is mostly associated with descriptive norms. It is practiced by individuals of the current generation based on their perceptions and associations. For instance, having a negative attitude towards the blacks.