Why Have Several Books in Cry, the Beloved Country

i think the purpose of having several books in cry, the beloved country is to show how even though we all have difference something will always connect us. for example, the different purposes of each book are different people in different settings and cultures, yet they all tie together somehow. i like how book 2 is the side of the family who's son got murdered. i think when the husband travels to Johannesburg to mourn his son, he will meet Stephen and their lives will become one. it's ironic how the victims family has been well off, with much love through the family and white yet accepting in a nice city where everyone of different races mix and live together in peace, yet Stephen's son, who killed the guy they're mourning, comes from a very racist crime ridden place and yet somehow their lives will be brought together. the reason is more of a theme than a reason.