從專業倫理角度檢視電視新聞的使用者生成內容：以「美工刀反擊」校園暴力事件為例

本文以「美工刀反擊」事件為個案，從專業倫理的角度並採用多模態批判論述分析（簡稱MCDA）方法，檢視三家新聞部如何挪用使用者生成內容（又稱UGC）製成電視新聞，以探討其專業表現。結果發現，新聞部傾向將UGC當成「原始」來源，並以校方或警方的觀點來賦予「校園暴力」意義。從MCDA的分析顯示，三家新聞部雖然挪用相同的UGC，但在影片選取、符號構連、編輯手法及敘事解釋上都不盡相同，導致其所建構的暴力真實呈現差異。就新聞部的專業表現來看，不論是在報導真相或減少傷害上，都有改善的空間。

This study investigates the ''Box Cutter Counterattack'' incident as a case study and employs the multimodal critical discourse analysis (MCDA) method to investigate how three newsrooms utilize user-generated content (UGC) to produce television news and assess their professional performance. The findings reveal that the three newsrooms tend to regard UGC as original sources and attribute the meaning of ''school violence'' from the perspective of either the school or the police. The MCDA analysis demonstrates that although the three newsrooms utilize the same UGC, they differ in film selection, articulation of signs, editing techniques, and narrative explanations, resulting in variations in the portrayal of violence. There is room for improvement in reporting the truth and minimizing harm by the newsrooms from the perspective of professional ethics.