I need help with the Thesis for To Kill a Mockingbird through symbolism, liberal thinking, and irrational judgment, Harper Lee suggests that...

In composing one's thesis for an essay, the writer needs
always to be consistent with the three elements that form the blueprint for the essay. 
Perhaps, then, you may wish to change your thesis to include three opinions that all of
the same concept.

You have written that outcasts are faced
with judgments because they are powerless in society as your general statement.  Is it
not, then, your objective to prove this statement?  If you use the
why question, you can create the three
opinions that will form your blueprint for the essay.  Here are
suggestions:

• because of stereotyping - Boo
  Radley is a "haint," he is insane, etc.; the Ewell family is considered "white trash" 
  Tom Robinson is just a "nigger"


• (because of) social
  taboos - Mr. Dolphus Raymond is ostracized because he breaks the social taboo of living
  with blacks. 


• (because of) fear of change - Atticus Finch
  breaks the "norm" and his liberal thinking in education and social areas disturbs the
  status quo of Maycomb.