CROSSROADS, South Africa — The end of apartheid was supposed to be a beginning.

Judith Sikade envisioned escaping the townships, where the government had forced black people to live. She aimed to find work in Cape Town, trading her shack for a home with modern conveniences.

More than two decades later, Ms. Sikade, 69, lives on the garbage-strewn dirt of Crossroads township, where thousands of black families have used splintered boards and metal sheets to construct airless hovels for lack of anywhere else to live.

“I’ve gone from a shack to a shack,” Ms. Sikade says. “I’m fighting for everything I have. You still are living in apartheid.”

In the history of civil rights, South Africa lays claim to a momentous achievement — the demolition of apartheid and the construction of a democracy. But for black South Africans, who account for three-fourths of this nation of roughly 55 million people, political liberation has yet to translate into broad material gains.