Compare and contrast the characters T.J. and Jeremy in Roll of Thunder Hear My CryMildred Taylor's Roll of Thunder, Hear My Cry

While Jeremy Simms and T.J. Avery are both friends of the
Logans, Jeremy risks much more in this friendship than does T. J., who like the homonym
of his name, aviary, takes flight from difficult situations. 
Jeremy, the brother of Lillian Jean who is so cruel to Cassie Logan, intrepidly risks
castigation from the other white children and punishment by his father, Charlie Simms by
walking with the children to school and by bringing to the house Christmas presents for
the Logans.  On the other hand, the disloyal T. J. does not stand by the Logans during
any of the racial crises.  He is underhanded, as well.  For instance, he tells the
kind-hearted Christopher-John that the coat which Uncle Hammer has given him is too big
for the boy, and, Christoper-John tells his mother,

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"...T. J. said it made me look like a
preacher...and he said since it fit him just right, he'd....take it off my hands till I
grow into it,, then thataway all the guys would stop laughing at me and calling me
preacher."

In his most
egregious act of disloyalty, a disgruntled T. J. reports Mrs. Logan for having begun the
boycott of the Wallace store because she has failed him.  This traitorous act causes
Mrs. Logan her teaching position. 

Certainly, Jeremy Simms
and T. J. Avery are the antithesis of each other as Jeremy is a character who represents
compassion and unselfish friendship--although he does run after his sister Lillian Jean
when Cassie retaliates against her--while T.J. is self-serving and uncaring of
others.