• At least 19 students and two teachers were killed Tuesday in a mass shooting at an elementary school in Uvalde, Texas
  • Tributes and condolences rolled in from celebrities, including Taylor Swift, Chris Evans and Selena Gomez
  • Swift said she is "filled with rage and grief" and "so broken" by the murders

At least 19 students and two teachers were killed Tuesday after a teenage gunman opened fire at an elementary school in Uvalde, Texas, officials said.

The shooter — identified by Texas officials as 18-year-old Salvador Ramos, of Uvalde — was killed by responding law enforcement officers, CNN reported.

As the death toll rose Tuesday night, Taylor Swift, Chris Evans, Selena Gomez and more celebrities took to social media to express their shock over the incident and offer their condolences to the families affected by the shooting.

"Filled with rage and grief, and so broken by the murders in Uvalde. By Buffalo, Laguna Woods and so many others. By the ways in which we, as a nation, have become conditioned to unfathomable and unbearable heartbreak. Steve’s words ring so true and cut so deep," Swift wrote alongside a video of Golden State Warriors coach Steve Kerr speaking out about the shooting.

Her friend Selena Gomez tweeted: "Today, in my home state of Texas, 18 innocent students were killed while simply trying to get an education. A teacher [was] killed doing her job; an invaluable yet sadly underappreciated job. If children aren’t safe at school, where are they safe?"

The "Wolves" singer added in a separate tweet that it was "frustrating" before urging those in power to "stop giving lip service and actually change the laws to prevent these shootings in the future."

Evans also expressed frustration and anger over the shooting, writing on Twitter: "F--king enough!!!"

Matthew McConaughey, for his part, took to Instagram Tuesday night to address the tragedy in his hometown of Uvalde, writing that he considers the mass shooting proof that "we are failing to be responsible for the rights our freedoms grant us."

"The true call to action is now for every American to take a longer and deeper look in the mirror and ask ourselves, 'What is it that we truly value? How do we repair the problem? What small sacrifices can we individually take today, to preserve a healthier and safer nation, state, and neighborhood tomorrow?' We cannot exhale once again, make excuses and accept these tragic realities as the status quo," the Oscar winner wrote.

The actor encouraged Americans and Texans to re-evaluate and renegotiate their wants from their needs and rearrange their values to find a common ground above the devastating American reality.

For him, the incident is part of "an epidemic we can control." He urged the others to do better and voiced the need for action to be taken to address the issue.

"And to those who dropped off their loved ones today not knowing it was goodbye, no words can comprehend or heal your loss, but if prayers can provide comfort, we will keep them coming," he concluded.

See more reactions below:

The school shooting comes less than two weeks after an alleged white supremacist killed 10 people inside a grocery store in Buffalo, New York. Authorities have said the Buffalo shooting was a hate crime in which the suspect targeted Black people.

Selena Gomez, Cara Delevingne and Taylor  Swift
LOS ANGELES, CA - AUGUST 30: (L-R) Model Cara Delevingne, recording artists Selena Gomez and Taylor Swift arrive to the 2015 MTV Video Music Awards at Microsoft Theater on August 30, 2015 in Los Angeles, California. C Flanigan/Getty Images