Two concepts, one of them being a category of people and the other something completely different, are defined as being incompatible. For example defining being a “Muslim” as being a priori incapable of wanting democracy and human rights.
Note the difference between the idea that "because of your race or religion, you are obliged to be against democracy" and the idea that "because of your race or religion, you are by definition against democracy - because that's how we have categorized your race/religion". The former is about how a category is viewed, while the other is about how a categorization is made. Thus the former is a facet while the later is this abstraction.
This is an abstraction of categorism.