When Scout, Dill and Jem arrive to view their father in the Tom Robinson trial, the African-American minister, Reverend Sykes, takes them under his wing, more or less, in the mad rush of people to get seats, and the children end up viewing the entire thing in the "colored" section, which is in the balcony of the courtroom. As Atticus finishes his closing arguments, Calpurnia enters the courtroom to report that Scout and Jem as being missing. Mr. Underwood promptly tells Atticus the kids are sitting upstairs, and have been since nearly 1:30 that afternoon.
After the predictable "guilty" verdict is rendered and Atticus leaves the courtroom, Scout hears Reverend Sykes speaking to her: "Miss Jean Louise, stand up. You're father's passin'." This clearly shows the depth of gratitude the African-American community felt to Atticus Finch for his ill-fated attempts to defend Tom Robinson.