The Black Flags of Jihad: Extremists Use Similar Banners

The Wall Street Journal
July 01, 2014 AT 1:16 PM
Extremists ranging from ISIS to Boko Haram to al Qaeda all use a variation of a black banner with white Arabic text that says "There is only one God and Mohammad is his prophet." What's the logic behind the logo? WSJ's Mark Scheffler reports.