What sorts of things did Atticus worried about?

In this chapter, Atticus is discussing the upcoming trial with his brother. Atticus is worried about the repurcussions that the children might face as a result of his defence of Tom Robinson. Atticus understand that the townspeople are racist, and that they will be angry. He knows what people will say, and the rumors that will be spread. I think he also understands the danger up to a point.

Atticus is worried that his children will be affected by the gossip and talk, that they will listen to outsiders before asking him. His worry is for his family, their feelings. As young children, their experiences will likely shape who they are, and how they feel about him.... as a man and a father.

"Right. But do you think I could face my children otherwise? You know what's going to happen as well as I do, Jack, and I hope and pray I can get Jem and Scout through it without bitterness, and most of all, without catching Maycomb's usual disease. Why reasonable people go stark raving mad when anything involving a Negro comes up, is something I don't pretend to understand... I just hope that Jem and Scout come to me for their answers instead of listening to the town. I hope they trust me enough.... Jean Louise?"