This past Friday, February 5, Twitter announced  - in a tweet, of course – that it had shut down more than 125,000 terrorism-related accounts since the middle of 2015, most of them linked to the Islamic State. The social media site removes accounts that are reported to them, and it also uses spam-fighting tools to identify and take down other violent accounts.  It works with public interest groups to encourage counter speech and reports violent accounts to the government.