Congressional leaders Monday remembered the 49 people killed in last year's terror attack on Pulse Nightclub in Orlando, a year after the deadliest mass shooting in American history.

House Speaker Paul Ryan, R-Wis., asked for his followers to take a moment during the day to remember the victims of the attack.

"Join me in taking a moment to remember the 49 innocent lives lost one year ago today in the #Orlando terrorist attack. #OrlandoUnitedDay," Ryan tweeted.

House Minority Leader Nancy Pelosi, D-Calif., tweeted a video accompanied by the caption: "Hatred will never defeat #pride. #OrlandoUnitedDay."

In the video, Pelosi said that the attack "wrought enormous heartbreak" on the families of the victims but also highlighted the "strength and resilience" of the LGBT community and the city of Orlando.

Senate Minority Leader Chuck Schumer, D-N.Y., retweeted the city of Orlando's official Twitter, which honored the victims by name over a rainbow background, accompanied by the hashtag: #Rememberthe49.

Florida Gov. Rick Scott also honored those lost by declaring June 12 as "Pulse Remembrance Day." Scott ordered flags be flown at half-staff and for a statewide moment of silence to be held at 9 a.m.