Perceptual constancy is known as the phenomenon by which we can perceive an object in the same way despite how far or near it is from us, that is, the phenomenon by which perception remains the same but our sensation changes. It´s also known as the Law of perception in which the intrinsic properties of objects (color, shape, size) are perceived as invariable even if the presentation conditions are modified: distance, perspective, lighting, etc.
I asked my civics teacher the same question and her answer was that he hated Jews 'because he hated the people that practiced different religions and did not see him as a God.Most of the people who didnt follow that,were Jews'.
Encourage them to address this kind of stuff ig. Also try to explain how to address racial discrimination in the correct way without getting anybody hurt verbally or physically.