Plot: Headlines for July 19, 2016; RNC Descends into Chaos as 'Never Trump' Movement Attempts Revolt on Convention Floor; 'Never Trump' vs. Unite Behind the Candidate: A Debate on the Future of the Republican Party; GOP Delegate & Schoolteacher: Melania Trump Gets a 'Zero' for Plagiarizing Michelle Obama Speech; Third Officer Acquitted in Freddie Gray Death, But Activists Convicted for Protesting Killing; Prophets of Rage: Chuck D, Tom Morello Headline 'End Poverty' March Against Trump at RNC; Meet Trump VP Pick Mike Pence, Crusader Against Safe Legal Abortion and LGBTQ Rights; Bassem Youssef, 'The Jon Stewart of Egypt,' Moves to U