Gregory baker was a 20-year-old african american man who was brought to the emergency room (er) by campus police of his university. he refused to leave a classroom after randomly walking into a lecture hall and shouting to the audience.

Based on the symtoms, Gregory Baker is diagnosed with the mental disorder known as Schizophrenia.

Schizophrenia is an abnormal psychological condition that caused the victim to display abnormal behavior and failure to understand reality. It's characterized by unclear or confused thinking, False belief, auditory hallucination, and lack of proper emotional expression.