How to Troll Islamic State Like a Pro

How to get under a terrorist's skin in just a few easy steps.

Choose your weapon.

Photographer: Ahmad Al-Rubaye/AFP/Getty Images
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From the grainy post-Sept. 11 video clips of Osama bin Laden to today's sophisticated online propaganda, Islamic terrorists and their supporters worldwide have proved adept at using the press, Internet and social media to get out their message and attract recruits.

Sporadic attempts by the U.S. and its allies to do the same have been far less successful. J.M. Berger, co-author of “ISIS: The State of Terror,” said such efforts are complicated by the coalition against Islamic State being such a diverse group of countries, making it difficult to present a united countermessage.