Orlando Nightclub Mass Shooting: Hollywood Reacts

Gerardo Mora/Getty Images
 Orlando police officers seen outside of Pulse nightclub after a fatal shooting and hostage situation on June 12, 2016 in Orlando, Fla.

The Orlando shooting at gay nightclub Pulse Orlando has left 50 killed and 53 injured, resulting in being the deadliest mass shooting in U.S. history.

Music Stars React to Orlando Nightclub Massacre, Deadliest Mass Shooting in U.S. History

"There's blood everywhere," Mayor Buddy Dyer said Sunday (June 12) at a news conference, hours after the shooting which authorities are investigating as an act of terrorism. 

The tragedy has been classified as a "domestic terror incident" and has rocked the nation and the LGBT community, with many politicians, including Hillary Clinton and Donald Trump, celebrities and public figures swiftly reacting on social media.

Hillary Clinton, Donald Trump React to Orlando Nightclub Mass Shooting

ATX Festival, the annual TV festival in Austin, Texas, canceled a violence-themed panel scheduled for Sunday in the wake of events and the Human Rights Campaign released a statement, saying HRC has lowered its flag to half mast.

Many in Hollywood took to Twitter to react to the news, including Laura Benanti who is currently in rehearsal for tonight's Tony Awards which will be dedicated to victims of the shooting. 

This article originally appeared in THR.com.

Shooting At Orlando Nightclub Leaves 50 Dead in Largest Mass Shooting in U.S. History | Patrons on Orlando's Pulse Before the Tragedy: 'We Could Be Our Authentic Selves' | President Obama Calls Orlando Nightclub Mass Shooting Act of Terror and Hate | Orlando Gay Nightclub Shooting Casts a Shadow on Tony Awards | Orlando Shooting: Trump Sees Backlash Over 'Congrats' Tweet; Clinton Calls Attack an 'Act of Terror' | Orlando Nightclub Mass Shooting: Hollywood Reacts | 'This Is the New Reality': Artists & Concert Execs Weigh In on Security Challenges After Orlando | Skrillex, Chainsmokers & More Dance Music Stars React to Orlando Nightclub Massacre  | Orlando Pride Radio Host Talks Pulse's Place in LGBT Community, Why It's Hard Not to Be Scared  | James Corden Gives Touching Orlando Speech at 2016 Tony Awards: 'Hate Will Never Win'