The answer is: Prejudice
Prejudice is a form of perception that we have toward a certain group of people without being backed by facts or actual experience.
Prejudice is often formed from generalization. For example, when we constantly see in news and television only reported the crime that conducted by a certain racial group, we would most likely grow up believing that members of that racial group is more prone to do criminal actions.
The Union was dedicated to the defeat and termination of the Confederate States of America, informally called "the Confederacy" or "the South".
According to the conflict theory of crime and deviance, social inequality and power underlie how crime, deviance and punishment is characterized. The wealthy and influential members in society determine whom and which behaviors are deemed deviant and punishable. The conflict theory can be misused to rationalize behavior because it implies that there aren't any behaviors or individuals who are inherently deviant , instead behaviors and individuals are deemed deviant when they do not serve the interests of affluent members of society.