Why did mr. barnett stop helping stacey t. j and cassie pl

Remember its the South and it's Whites first then blacks

Explanation:

In the middle of filling T.J.'s order, a white woman comes in. Mr. Barnett stops filling T.J.'s order to help her.

Cassie objects to this, and Stacey tells her to be quiet.

After helping the white woman, Mr. Barnett returns to T.J.'s order. This time, he gets interrupted by a little white girl buying pork chops.

Cassie gets really mad (and really, who could blame her?), and thinks it's just completely ridiculous for Mr. Barnett to help another child before T.J. She can understand him helping an adult first, but not a child.

Cassie decides to intervene, and tells Mr. Barnett that T.J. was waiting and he was in line first.

Mr. Barnett is not cool with this, and yells out for Cassie's mother. Well, he says this in much more demeaning terms: "Whose little n is this?"  

Cassie bites back, letting him know that the situation is unfair.

Mr. Barnett makes Stacey take Cassie out of the store.