2012/04/12 Headlines: Zimmerman Arrested, Charged with 2nd-Degree Murder; Syria Ceasefire Begins, But Troops Still in Civilian Areas; Major Clashes Erupt Between Sudan and South Sudan; Interim President Takes Office in Mali; Connecticut Lawmakers Vote to Abolish Death Penalty; Audio: Man Killed by North Chicago Police Begged for His Life; Immigrants Ambushed, Killed by Armed Militia in Arizona; Report Condemns Police Pepper-Spraying at UC Davis; Video: Teenager Electrically Shocked at School for Disabled; Supreme Court Case May Challenge Citizens United; DOJ Sues Apple, Publishers over E-Book Pricing; Bangladeshi Labor Activist Tortured, Murdered; Algerian Independence Leader Ahmed Ben Bella Dead at 93;$