2011/10/20 Headlines: Muammar Gaddafi Reportedly Killed in Sirte; Tens of Thousands Protest, Strike Against Greek Austerity; U.N. Probe Accuses Iran of Escalating Abuses; Admin Delays $53 Million Military Sale to Bahrain; Obama Tops GOP Candidates in Wall Street Donations; Citigroup Pays $285 Million Settlement to SEC; Social Security Rises, But Medicare Premium Hike Could Negate Gains; Judge Orders Police to Stop Ticketing Occupy Cincinnati Protesters; Flooding Kills Dozens in Mexico, Central America; Author Piri Thomas Dies at 83