Transcript for Pope Francis celebrates Mass in Cairo amid tight security

the security concerns for pope Francis. Celebrating an open air mass weeks after Christians were targeted in suicide bomb attacks. ABC's chief foreign correspondent Terry Moran. Reporter: Bristling security for today's papal mass in Cairo. Masked soldiers. Standing guard. Helicopter gunships overhead. But for the faithful -- many of whom worship in fear in this country after a series of horrific terror attacks at their churches -- nothing could dampen this day. Francis got a rapturous welcome, touring this military stadium in a golf cart, surrounded by a grim-faced phalanx of bodyguards. The tight security apparently limiting attendance here. The stadium just half-full. Still, somehow, it was a jubilant scene. In his homily, Francis denounced the religious extremism that drives so much violence here, and around the world. "The only fanaticism believers can have is that of charity," he declared. For Christians we spoke with in Cairo, the pope's visit meant hope. That we're one. And the basics are one. We don't hate and they don't hate back. Reporter: Francis this afternoon heading back to Rome. Only 27 hours on the ground, but making a real impact. On board the papal plane, pope Francis told reporters he regretted he didn't see the pyramids. Too risky, it seems, even for him.

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