Think of some important social problems that you care about -- poverty, homelessness, racism, global warming, , .... Do you think there are psychological aspects to these issues? How might a psychologist be involved in studying and resolving such problems?
Important issues like poverty , racism, stereotype, homelessness definitely has to do with psychology.
For instance, someone might be be racist because of a certain believe he has about a specific group of people with different race colour or culture.
Moreover, Stereotype is obvious with religions, were people do criminal acts and try to represent that its their religion that is promoting them.
Homelessness has to do with how homeless persons thinks about themselves and how others perceive them.
In my opinion, a psychologist should study and try to find solutions for such relevant issues as they can benefit many human beings. A psychologist could be an unknown hero.