During an intense Madden NFL '19 video game tournament at a local arcade known as the GLHF Game Bar in Jacksonville, Florida, an unexpected outbreak of violence turned a celebratory gaming event into a tragedy. Competitors and fans were eagerly partaking in the tournament when a shooter, later identified as 24-year-old David Katz, opened fire. The incident took place in the early afternoon, creating a scene of panic and terror as attendees attempted to escape the active shooter situation. Katz fired multiple shots with a semi-automatic handgun, resulting in the deaths of three participants: Elijah Clayton, Taylor Robertson, and the shooter himself. Eleven others were also injured, with some victims suffering critical wounds.

In the aftermath, law enforcement responded swiftly, prompting a lockdown of the surrounding area. The tragedy highlighted the growing concerns about gun violence in America, particularly in settings traditionally viewed as safe spaces for community engagement, such as video game tournaments. Both the gaming community and broader public figures expressed deep condolences for the victims and their families while calling for discussions about gun control measures. The event resonated widely across social media, leading to an outpouring of grief and reflection on issues of violence and security in modern society.

The incident received national and international media attention, as it not only represented the continued impact of gun violence in the United States but also raised questions regarding mental health and the responsibilities of local law enforcement in such high-stakes communal environments. Investigations revealed that Katz had a history of mental health issues, raising further dialogues around support systems for individuals experiencing similar challenges. Various gaming organizations later worked on enhancing security measures for events across the country to ensure a safe environment for gamers and attendees alike.