A perspective is a point of view from which you decide to look at phenomena. Different authors looking at different events at different time periods decided to analyze them in different ways. The variety of perspectives that exists in sociology is a product of this diversity. There is no "correct" way to look at a social phenomenon. Instead, all perspectives are complementary and adequate, with some being better than others in particular situations, but none of them being perfect.
Atticus finch is a lawyer in Maycomb county and judge Horton is a county judge in abbots county. Atticus was defending Tom Robinson while judge Horton was on the Scottsboro boys side.