2014/08/19 Headlines: 31 Arrested in Ferguson Protests Overnight; 2 Shot During Unrest; Brown Family Attorney: Autopsy Backs Up Witness Accounts of Fatal Shooting; Obama Raises Concerns about Police Militarization in Post-Shooting Crackdown; Israel, Hamas Extend Truce for 24 Hours; Key Differences Remain; U.N. Agency: Gaza Can't Return to Blockade Conditions; Israel Blocks Amnesty International, Human Rights Watch from Gaza; Obama Hails "Major Step" as Kurdish, Iraqi Forces Retake Mosul Dam; Islamic State Video Threatens Attacks on Americans; Ukraine, Rebels Trade Allegations of Civilian Killings; Unidentified Warplanes Strike Militias in Libya; Tens of Thousands Rally in Pakistan Anti-Gov't Protests; Nazi Resister Returns Holocaust Medal to Israel After Losing Relatives in Gaza