Austrians mourn victims of school shooting

Austria is reeling from one of the worst rampages in the country's history after a gunman opened fire at a high school in the city of Graz, killing 10 people, including teenagers. Elke Kahr, mayor of Graz, spoke to CNN's Frederik Pleitgen during a candlelight vigil as the city reflects on the rare tragedy. #cnn #news #austria #graz