Final answer:
The movement of radical professionals contributes to the Mental Patients Liberation Movement through their activism and advocacy for social change and the rights of mental health patients.
Step-by-step explanation:
The movement of radical professionals contributes to the Mental Patients Liberation Movement through their activism and advocacy for social change and the rights of mental health patients. These radical professionals, such as clinical psychologists and activists, have played a significant role in challenging the pathologizing of mental health conditions, including homosexuality, and advocating for the liberation and rights of mental health patients. For example, radical activists' protests and negotiations led to the landmark removal of homosexuality as a mental illness from the Diagnostic and Statistical Manual of Mental Disorders in 1973.