Who Dissemnates Rumiyah? Examining the Relative Influence of Sympathiser and Non-Sympathiser Twitter Users

This paper was presented at the 2nd European Counter Terrorism Centre (ECTC) Advisory Group conference, 17-18 April 2018, at Europol Headquarters, The Hague. The views expressed are the authors’ own and do not necessarily represent those of Europol.
In a speech delivered at the United Nations General Assembly in September 2017, the U.K. Prime Minister Theresa May called on social media companies to do more to remove and block terrorist content from their platforms [1]. In the speech she stated that the average lifespan of online propaganda from the so-called Islamic State (IS) was 36 hours. For such content to be disrupted effectively, she claimed that this figure needed to be reduced to one to two hours. This has since come to be known as the ‘golden window’: if terrorist material can be detected and removed within one to two hours, its spread will be prevented.