Extremist Preaching News Today

Support network. errol. >> barnett: all right, thank you, catherine herridge. now, saudi arabia has always denied any involvement in the 9/11 attack, but 15 of the 19 hijackers were saudi citizens. holly williams is in riyadh with more on the struggle against extremextremism there. >> reporter: saudi arabias long been criticized for school textbotextbooks that denigrate non-muslims and even justify violence against them. now, say the authorities, the curriculum has been rewritten. >> some activi...