As the narrator says:
Why the hell would a Southern town circa 1960 need an “outside agitator” who was PRO segregation?
The film’s entire motivating conceit is inherently flawed, but this is true of so many liberal “message” movies — Roger & Me, White Man’s Burden, District 9, any number of implausible “What if/table-turning” episodes of Law & Order — that you feel weird even pointing it out.
