what are the social and historical context of to kill a mocking bird

The setting is around 1933 to 1935 in Alabama. This in fact gives us quite a bit of information. We know that blacks and whites were segregated. Racism among whites was normal behavior. Scout mentions that although slavery is outlawed, the Civil War was still in the minds of many whites. The blacks only mixed with whites as subordinates (housekeeper.....) Atticus becomes an enlightened figure treating everybody as a person and treating Calpurnia as family.