Barack Obama: I consider December 14th, 2012 the single darkest day of my presidency. The news from Sandy Hook Elementary was devastating, a visceral blow, and like so many others, I felt not just sorrow but anger at a world that could allow such things to happen.

https://twitter.com/BarackObama/status/1603050252285927424ttps:/ /twit ter.com/BarackObama/status /1603050252285927424?s=20&t=a0mBOs5DRZOdzUyUPyj72A

https://thttps://twitter.com/BarackObama/status/1603050252285927424witter.com/BarackObama/status/1603050252285927424?s=20&t=a0mBOs5DRZOdzUyUPyj72A