I Know Why the Caged Bird Sings - society changing?

I've read the book, "I Know Why the Caged Bird Sings". I'm trying to find ways in which society around Marguerite was changing. I'm having a lot of trouble.
I Know Why the Caged Bird Sings - society changing?
Racism and Segregation

Maya confronts the insidious effects of racism and segregation in America at a very young age. She internalizes the idea that blond hair is beautiful and that she is a fat black girl trapped in a nightmare. Stamps, Arkansas, is so thoroughly segregated that as a child Maya does not quite believe that white people exist. As Maya gets older, she is confronted by more overt and personal incidents of racism, such as a white speaker’s condescending address at her eighth-grade graduation, her white boss’s insistence on calling her Mary, and a white dentist’s refusal to treat her. The importance of Joe Louis’s world championship boxing match to the black community reveals the dearth of publicly recognized African American heroes. It also demonstrates the desperate nature of the black community’s hope for vindication through the athletic triumph of one man. These unjust social realities confine and demean Maya and her relatives. She comes to learn how the pressures of living in a thoroughly racist society have profoundly shaped the character of her family members, and she strives to surmount them.

Debilitating Displacement

Maya is shuttled around to seven different homes between the ages of three and sixteen: from California to Stamps to St. Louis to Stamps to Los Angeles to Oakland to San Francisco to Los Angeles to San Francisco. As expressed in the poem she tries to recite on Easter, the statement “I didn’t come to stay” becomes her shield against the cold reality of her rootlessness. Besieged by the “tripartite crossfire” of racism, sexism, and power, young Maya is belittled and degraded at every turn, making her unable to put down her shield and feel comfortable staying in one place. When she is thirteen and moves to San Francisco with her mother, Bailey, and Daddy Clidell, she feels that she belongs somewhere for the first time. Maya identifies with the city as a town full of displaced people.

Maya’s personal displacement echoes the larger societal forces that displaced blacks all across the country. She realizes that thousands of other terrified black children made the same journey as she and Bailey, traveling on their own to newly affluent parents in northern cities, or back to southern towns when the North failed to supply the economic prosperity it had promised. African Americans descended from slaves who were displaced from their homes and homelands in Africa, and following the Emancipation Proclamation in 1862, blacks continued to struggle to find their place in a country still hostile to their heritage.