Islamic Jihad aside, none of these photos denote any sort of religious message. The headbands the kids are wearing typically say things like "remember the martyrs to the Palestinian cause."
Get the players straight. Not all that is Muslim is Arab, and not all that is Arab is Muslim--especially in the case of the Palestinians, whose factions such as Fatah are Marxist.
Muslim schmuslim. Guaranteed - every one of those little "would be martyrs" is looking forward to Allah's paradise following his suicide mission - even the Marxists.