The Counter Terrorism Internet Referral Unit (CTIRU) has launched a campaign to encourage the public to report online material which promotes terrorism or extremism. This includes material within social media.
19 April 2016 - Click here to report illegal or harmful information, pictures or videos you’ve found on the internet. All reports made are anonymous unless you choose to leave your details.
You can report material such as:
•articles, images, speeches or videos that promote terrorism or encourage violence
•content encouraging people to commit acts of terrorism
•websites made by terrorist or extremist organisations
•videos of terrorist attacks
Source: Gov.uk (Contains public sector information licensed under the Open Government Licence v3.0.)