SAN FRANCISCO — In July 2013, a broadcaster affiliated with the Islamist group Hezbollah posted a threatening video on Facebook, YouTube and Twitter. It featured gun-toting militants practicing an ambush to kidnap Israeli soldiers. The message: This is how we kill you.
In December, the broadcaster posted another video that showed how Hezbollah’s social media strategy had changed. This one contained close-up footage of Israeli soldiers on patrol, with no Hezbollah members visible. The message was also dialed back: We are watching you.