Watch: Beto O'Rourke escorted out of press conference after confronting Greg Abbott, Ted Cruz over Uvalde shooting

Democratic Texas gubernatorial candidate Beto O'Rourke was escorted out of a press conference by police on Wednesday after he confronted incumbent Republican Governor Greg Abbott over Tuesday's mass shooting at Robb Elementary School in Uvalde that left 19 students and two teachers dead.

New York Post reporter MaryAnn Martinez snapped a photo of O'Rourke sitting in the audience right before he approached the stage.

"You're doing nothing. You're all doing nothing. This was totally predictable," Beto calmly said to Abbott, who was seated at a table next to Lieutenant Governor Dan Patrick (R) while United States Senator Ted Cruz (R) stood behind him.

"Excuse me, excuse me, excuse me, you're out of line and an embarrassment," Patrick said to O'Rourke.

Uvalde's GOP Mayor Don McLaughlin, who was stationed on stage right, then erupted at O'Rourke while the former Congressman was asking his elected representativces to redress his grievances.

"You need to get his ass outta here," he told a police officer.

"Sir, you are out of line. Sir, you are out of line," he shouted toward O'Rourke. "I can't believe you're a sick son of a bitch that would come to a deal like this to make a political issue."

Last year, Abbott signed a near-universal open carry law eliminating state background checks, permit requirements, and basic training for firearm owners.

Watch below via CNN Chief White House Correspondent Kaitlan Collins:

And from another angle, courtesy of The Huffington Post's Daniel Marans: