Over the past four months, protesters in Hong Kong have been demanding greater freedoms, as they tell Holly Williams. Nadia Murad received the Nobel Peace Prize last year for her efforts to end the use of sexual violence as a weapon of war. and now she is teaming up with human rights attorney Amal Clooney in her fight to seek justice against ISIS for their crimes against the Yazidis. They talk to Scott Pelley. Plus -- Psychedelics could possibly treat depression, addiction, and anxiety. Anderson Cooper reports. Learn more about your ad choices. Visit megaphone.fm/adchoices