"Facebook remains an important weapon of choice for pro-Islamic State supporters, who continue to proliferate terrorist content across the world's largest social platform to recruit and incite attacks. A recent report from Counter-Extremism Project (CEP), a New York based think-tank, was critical of Facebook's failure to take down pro-Islamic State posts and propaganda which it claimed can 'remain on the platform for months or even years'. CEP found evidence on Facebook of pro-Islamic State recruiters using the platform's messaging system to connect with others, and post disturbing acts of graphic violence. One video, which had been up for two weeks, is a 30-second clip posted by a pro-IS Facebook account that showed fighters desecrating a corpse by amputating an arm. The video was covered with a filter by Facebook due to 'violent or graphic content.' CEP said Facebook's messaging system is 'so fast and simple' that IS have developed a specific, structured strategy of using it to radicalise and recruit individuals around the world. In the report, CEP claimed to have observed one user who operated multiple Facebook accounts 'posting a series of messages' urging others to help spread IS propaganda.”