Conversation so far:
When did Frederick Douglass become an abolitionist?
Frederick Douglass joined several organizations in New Bedford, and regularly attended abolitionist meetings after moving with his wife to New Bedford, Massachusetts in 1838.
What did Frederick Douglass do as an abolitionist?
In his time, Frederick Douglass was described by abolitionists as a living counter-example to slaveholders' arguments that slaves lacked the intellectual capacity to function as independent American citizens.

Question: who did he give the speech to?
Self-contained rewrite: Who did Frederick Douglass give the speech to after meeting William Lloyd Garrison?