I need to analysis the theme conflicts characters and symbolism/motifs

There are many important themes in To Kill a Mockingbird, but to me these two are the most important:

Race: the issue of race is ubiquitous in the story, and explicitly so. The problems between people of different histories are extraordinarily complex--so much so that any simple understanding of racism will never be enough to move towards the goal of reconciliation.

Law: what is just/right/good? Even though it is pretty clear that killing an innocent man is none of the above, the response to the danger of racism and injustice is not so easy to answer. Different characters represent different approaches to justice--some perhaps falling prey to injustice themselves.