Conflict of To Kill a Mockingbird?

SPOILER ALERT!A conflict between Atticus and the town is present. None of them (except a select few) believe Atticus is doing the right thing by defending Tom Robinson. They verbally assult him and Bob Ewell even physically assults his children. This is mainly fueled by predjudice which is a major theme in the book.
to kill innocence
You could argue that there is more than one conflict in To Kill a Mockingbird.

1. The loss of Jem & Scout's innocence throughout the trial.

2. Atticus's constant struggle to raise his children in an upright manor, especially with Aunt Alexandria constantly pressuring him.

3. The main conflict- the trial itself. The evidence in the trial really points towards the black man being innocent, but the fact that a white man and his daughter are accusing him of rape, the time period and character attitudes show that "a black man's Word means nothing in the presence of a white man". The setting of the book really shows the social conflicts of the time. Atticus fights for the black man, which is a social disgrace, especially in the South.

I hope this helped, and made sense. ;)

Good luck!