The rates of mass shootings in the United States have substantially increased in the last couple of decades. Mass media news networks are the first sources to announce reported mass shootings to the general public, but scholars have identified that news articles will commonly discuss information about the perpetrators and not cover as many details related to the outcomes of mass shooting events. Using a content analysis approach, this study investigated the content discussed in online news articles of mass shooting incidents. In addition, this study looked at the distinctions between the information that right-leaning, left-leaning, and centrist news sources report on mass shooting events. The three categories with the most coverage were 1) perpetrator, 2) victims, and 3) context of incident, but the majority of coverage on victims only reported the number of victims killed and wounded. The content that politically biased and unbiased new organizations focused on had varied based on the categories and variables within. Theoretical implications of this study show that the results were consistent with Ruggiero’s (2000) uses and gratification theory. Policy implications of this study show consistency with previous literature on the need to address limitations on the extent of categories discussed.