March 2020 was the first March without a school shooting in the U.S. since 2002 - CBS News
https://www.cbsnews.com/news/coronavirus-first-march-without-school-shooting-since-2002-united-states/
　　
新型コロナのロックダウンのお陰で18年ぶりに校内乱射事件のない3月だってヽ(´ー｀)ノ