In an unprecedented show of unity and political solidarity, waves of students marched out of class Wednesday to demand stricter gun laws and an end to school massacres.
원문출처 : https://www.cnn.com/2018/03/14/us/national-school-walkout-gun-violence-protests/index.html
원문출처 : https://www.cnn.com/2018/03/14/us/national-school-walkout-gun-violence-protests/index.html