Prime Minister Malcolm Turnbull has joined Britain’s Prime Minister Theresa May in calling on social media companies to crack down on extremist material being published by users.

It comes in the wake of the recent terror attacks in Australia and Britain.

Facebook is considered a hotbed for terrorist recruitment, incitement, propaganda and the spreading of radical thinking. Twitter, YouTube and encrypted services such WhatsApp and Telegram are also implicated.
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Disruption of terrorists on social media involves reporting and taking down of radical elements and acts of violence, whether that be radical accounts or posted content that breaches community safety and standards.
https://theconversation.com/four-ways-social-media-companies-and-security-agencies-can-tackle-terrorism-78903