What is the theme in Jump and Other Stories by Nadine Gordimer?

Few of the tales in Jump and Other Stories are presented without the element of racial inequality due to racial prejudice. In some stories, such as "Home", "Jump", "Comrades", "The Moment Before the Gun Went Off", "What Were You Dreaming", "Amnesty", and most notably "Keeping Fit", it is a major element in the tale. In other selections it is simply present as a constant aspect of the modern lives presented in these tales.