What is significant about the town's conclusion regarding the disturbance to the Radley place?

All the neighbors assume that the Radley place was being burglarized by a black man and that he was scared off by Radley's gunfire. They nonchalantly or casually figured that if he returns, Radley will finish him off. This conclusion is significant because it shows that the townspeople assumed that all the illegal activity happening in town was caused by colored people. They had not actually seen the "burglar" but automatically assumed he was black. In all actuality, "he" was Scout, Dill, and Jem, three white children. This incident exemplifies the town's fears, stereotypes, and racist attitude.