Among the many disturbing aspects of the execution of journalist James Foley is the fact that it was part of a deliberate PR campaign. Groups like ISIS rely on hundreds of tech-savvy foreign fighters from the West to disseminate their radical vision — often with success.

Among the many disturbing aspects of the execution of journalist James Foley is the fact that it was part of a deliberate PR campaign. Groups like ISIS rely on hundreds of tech-savvy foreign fighters from the West to disseminate their radical vision — often with success.

Among the many disturbing aspects of the execution of journalist James Foley is the fact that it was part of a deliberate PR campaign. Groups like ISIS rely on hundreds of tech-savvy foreign fighters from the West to disseminate their radical vision —&nbsp;often with success.

The  extremists who killed James Foley are as brutal as they are Internet savvy

A daily public radio broadcast program and podcast from PRX and WGBH, hosted by Marco Werman

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The extremists who killed James Foley are as brutal as they are Internet savvy

The extremists who killed James Foley are as brutal as they are Internet savvy