Obtaining accurate information from social media during a crisis can be difficult, but should all information really be disseminated? Social media platforms actively filter out terrorist and violent extremist content (TVEC), but how are users themselves counteracting its spread? This paper aims to connect the research on media events with studies currently being conducted in information science and digital media research through a case study of tweets during the Vienna terror attack in late 2020. These tweets were manually coded in accordance with Braun and Clarke’s reflexive thematic analysis. This study shows that during the 2020 Vienna attack, GIFs shared on Twitter served three functions: amplification, personalisation and ethical practice. The paper ends with a discussion on the ways cats may function as a countermeasure against the prevalence of TVEC on social media during terrorist attacks and the implications of such countermeasures.