Answer:
The purpose is to present Emilio with more humanity, showing that he was a member of a family and that there were people who cared for him, like Martin.
Step-by-step explanation:
This question is about the article "Blocking the Transmission of Violence" which presents the facts about Emilio's violent murder.
Although this murder is the main theme of the text, the article begins by presenting Martin, Emilio's uncle. The intention of starting the article in this way is to show Emilio in a more humane and bland way, showing how he had a family, who kept in constant contact and who cared for him. This can be seen mainly when the article states that Martin "was especially close to his nephew, got on the first Greyhound bus to Chicago."