Social Bias & Persuasion

What are the individual/societal/global implications if people are influenced/persuaded more by the peripheral route than the central route? Demonstrate critical thinking. —How can we become more resistant?
Watch FRONTLINE: A Class Divided (youtube) https://www.youtube.com/watch?v=1mcCLm_LwpE —Using the academic terms from the text/lecture analyze the exercise/workshop of Elliot and the correctional officers (evolutionary, cognitive, socio-cultural).
How did the discriminated group feel? What behavioral /motivational impact did it have on them? How can we as a culture become more aware and resist in-group / out-group bias (racism, sexism, etc.)