The Barbers blaming the Syrians demonstrates the rampant and easy prejudice in Maycomb.
Miss Tutti and Miss Frutti had furniture stolen from their house and hid it in the basement, and they were sure that it was Syrians that took it. It was actually a Halloween prank by local children.
Miss Tutti was sure those traveling fur sellers who came through town two days ago had purloined their furniture. "Da-rk they were," she said. "Syrians." (ch 27)
The fact that the Barbers blame people they don’t know whom they assume are “Syrians” demonstrates that it is customary in Maycomb to blame the closest black person or foreigner. They also say they heard it, when both of them are functionally deaf so it is actually a completely false accusation.