新聞媒體做為公共議題之資訊平臺、言論場域，既是形塑、導引公眾意見走向的重要公共領域（public sphere），也是具倫理規範功能的守門人。本文觀察四家報紙對鄭捷殺人案所下標題及相關報導，分析幾個主流平面媒體對此案報導的框架，解讀新聞媒體如何影響、形塑社會大眾觀感，以及對廢死議題的影響。

News media serve as a platform for public information and an arena for the expression of opinion. They are both the public sphere in which public opinion is formed and the gatekeeper of social ethics. This essay looks at the headlines of the four main newspapers relating to the Zheeng Jie MRT homicides. The author analyzes the reporting framework of mainstream print media coverage of the case and then interprets how media influence shapes public perception and examines its impact on the abolition of the death penalty.