Why is there so much importance to public space – for Blacks and whites?

Dailey essentially argues that historians must look at resistance in a situational light (Not all resistance is physically fighting or marching for rights). For Dailey, she looks at public space (sidewalks especially). African Americans had to abide by strict social rules in the South. Explain the purpose of enforcing these “laws” by whites and breaking these “laws” by Blacks. Why is there so much importance to public space – for Blacks and whites?