**FILE** Saudi Shi’ite protesters hold Saudi flags and portraits of unidentified Saudi Shi’ite prisoners during a demonstration in Qatif, Saudi Arabia, on March 9, 2011. Activists in Saudi Arabia’s Shi’ite Muslim minority have issued Internet calls for a “Day of Rage.” (Associated Press)Young American Muslims can become radicalized online very quickly and with few warning signs, becoming potential terrorists before federal agencies can identify them, a new congressional report warned Monday.
