As some militant groups find ways to maintain a social media presence despite bans, Facebook, YouTube, and Twitter struggle to enforce rules toward the groups (New York Times)

New York Times:
As some militant groups find ways to maintain a social media presence despite bans, Facebook, YouTube, and Twitter struggle to enforce rules toward the groups  —  SAN FRANCISCO — In July 2013, a broadcaster affiliated with the Islamist group Hezbollah posted a threatening video on Facebook, YouTube and Twitter.

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