On April 2, Twitter's violations department suspended approximately 10,000 accounts of the social media network, "for tweeting violent threats."
Rick Gladstone of the New York Times reports:
The suspensions came against a backdrop of rising criticism that Twitter has allowed the Islamic State to exploit the social network to spread propaganda, glorify violence and seek recruits. (...)
The Twitter representative, who spoke on the condition of anonymity for security reasons, attributed the surge of suspensions in part to a widely publicized effort by Islamic State opponents, including some hacking groups and online vigilantes, to expose suspect accounts and report them as violators.
However, some anti-ISIS activists say violators can easily set up new Twitter accounts; some "even boast about how many times they have been suspended."