U.S President Obama

Outgoing U.S President Barrack Obama has listed the day he met with the parents of the victims of the massacre at Sandy Hook Elementary School in 2012 as the toughest day of his presidency.

“I still consider the day I traveled up to Newtown to meet with parents and address that community as the toughest day of my presidency,” Obama told the History Channel in an interview that will air on Jan. 15, five days before he leaves office.

“It’s the only time I ever saw Secret Service cry at an event. So it was brutal,” Obama said in one of his exit interviews, according to Yahoo.

The website reported that Obama  has often been moved to tears when reflecting on the mass shooting that killed 26 people — including 20 children — in Newtown, Conn., on Dec. 14, 2012.

The website recalled that the U.S President  teared up delivering a statement the day of the massacre, at an interfaith vigil in Newtown, and even at the White House last January while announcing executive actions designed to curb gun deaths.

“Every time I think about those kids, it makes me mad,” Obama said Jan. 5, 2016.