What was the problem in once upon a time by Nadine Gordimer?

In "Once Upon a Time" by Nadine Gordimer, the central problem revolves around the pervasive fear and insecurity in a society marked by racial and social tensions. The story highlights the lengths to which a family goes to protect themselves from perceived threats, ultimately leading to tragic consequences. The narrative explores themes of paranoia, isolation, and the irony of self-imposed barriers that ultimately fail to provide true safety. This reflects the broader societal issues of apartheid-era South Africa, emphasizing the futility of attempting to secure safety through exclusion and oppression.