What did Frederick Douglass mean by "fruit of abolition"?

Chapter 7 opens with Douglass recalling the roots of his
literacy. He recalls how
Master Hugh earlier predicted that teaching a slave
to read and write would would lead to great
discontentment, and as he reviews
both the speeches of Sheridan and The Columbian
Orator,
he finds that his soul is both "tormented" and "stung."
Literacy has provided
him with the tools to dispel the myths of slavery but not with the tools
with
which to escape it. He begins to listen to the people around him speak of slavery, and
he
learns a new word: abolition. Although he learns that the word refers to
those who seek to
abolish slavery and that this idea is picking up momentum,
the context in his own environment
has a negative .

He
hears people talk about slaves escaping. He hears people
narrating how slaves
have killed their masters. He hears about slaves setting fires to barns and

other "terrible" acts done to their slaveholders. In each of these, they refer to
the
slaves' acts as "the
fruit...

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