How does Harriet Ann Jacobs use the narrative form in her piece "Incidents in the Life of a Slave Girl?" Use evidence from the text to support your response.

In paragraph 5, president obama remarks: “you know, when trayvon martin was first shot i said that this could have been my son. another way of saying that is trayvon martin could have been me 35 years ago.” how does president obama use rhetoric in this quote to contribute to the overall meaning of his speech?