Overview: 2012/03/23 Headlines: U.S. Soldier to Be Charged for Afghan Massacre; Death Toll at 17; 8,000 Rally for Trayvon Martin in Florida; Sanford Police Chief Temporarily Leaves Post; Touting Drilling Support, Obama Backs Southern Leg of Keystone XL; New Rules Allow Intel Officials to Retain Info on U.S. Citizens; U.N. Security Council Condemns Mali Coup; Activists: 40 Killed in Syria Crackdown; U.N. Panel to Probe Israeli Settlements; Gen. Allen: U.S. Needs "Significant Combat Power" in Afghanistan; Over 200,000 Students Protest Tuition Hikes in Quebec; Over 130 Arrested in Rally for Closure of Vermont Yankee Nuclear Plant; Civil Rights Attorney John Payton Dead at 65;$