Overview: Headlines for October 12, 2016; Leaked Hillary Clinton Emails: Could Bernie Sanders Have Won Primary If Leak Occurred Earlier; Climate Direct Action: Activists Halt Flow of Tar Sands Oil by Shutting Off Valves of Five Pipelines; Will Racist, Anti-Immigrant Trump Supporter Sheriff Joe Arpaio Be Jailed for Contempt of Court; Women's Boat to Gaza: 13 Activists Detained by Israel, Weeks After U.S. OKs $38B in Military Aid