The key sections of rhetorical analysis are: Introduction, Body Conclusion The focus of rhetorical analysis will vary depending on the text examined, but generally involves understanding the context of the topic, identifying key concepts, and analyzing how the author uses rhetoric to persuade the public.Introduction. “Letter From a Birmingham Jail,” written by Martin Luther King Jr., describes a protest against his arrest for nonviolent resistance to racism. In the letter, King calls for unity against racism in society, while he wants to fight for human rights, using ethics. Likewise, King uses pathos to trigger emotion. How to write a rhetorical analysis essay. In a rhetorical analysis essay, a writer will examine the rhetoric and style of another author's work. If you want to write your own rhetorical analysis essay, we have developed a step-by-step guide to walk you through the process. Here's a demonstration of how to write your introduction like a pro. Step one: Start your introduction with a catchy phrase. Like other types of essays, the first sentence of your article should be a catchy statement. Make sure the hook reflects your topic and further matches the newspaper's audience.