Hoi Ching examines the many forms of prejudice and discrimination that all of us fall prey to. She illustrates her talk with demonstrations and slides relating to Gestalt Laws, and explains how our brains manipulate visual stimuli in order to make sense of our world. Social Identity Theory is also employed in order to describe how an 'us versus them' mentality is fostered in society, and cites mainland immigration into Hong Kong as an example.
