Shawn Mendes Wears Orange at Wango Tango Festival to 'Raise Awareness to End Gun Violence'

Rich Polk/Getty for iHeartRadio

Shawn Mendes is using his platform for a good cause.

While performing at the 2022 iHeartRadio Wango Tango Festival on Saturday, the "Treat You Better" singer took the opportunity to express his stance against gun violence in the United States.

"We are wearing the color orange to raise awareness to end gun violence in America," Mendes, 23, said as he stopped mid-performance before urging the crowd to see his post on Instagram about his partnership with the non-profit organization, Everytown.

RELATED: Shawn Mendes Draws Comparisons to Disney Princes in His Tommy Hilfiger 2022 Met Gala Look

According to its website, Everytown is "a movement of more than 8 million moms, mayors, survivors, students, and everyday Americans working to end gun violence."

A day prior to the show, the Canadian crooner shared a post with an orange background encouraging his followers to "tell your senators to take action on gun safety now" by texting "BOLD" to 644-33.

"Today is National Gun Violence Awareness day," he wrote in the caption on Friday. "Tomorrow, I'm performing at @iheartradio Wango Tango, and I'll be in Orange. If you're coming or you're tuning in, join me & #WearOrange 🧡."

Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

Last month, America suffered another mass shooting when a gunman killed 19 students and two teachers at Robb Elementary School in Uvalde, Texas. Less than two weeks prior, an alleged white supremacist killed ten Black people inside a grocery store in Buffalo, New York.

Multiple other fatal shooting incidents have also recently occurred across the country, including at a church in California, a graduation party in Georgia, and a hospital in Tulsa, Oklahoma.

Kevin Winter/Getty for iHeartRadio

On Sunday, while thanking the event's organizers for having him at the concert, Mendes also showed his appreciation for "everyone who joined me in orange."

RELATED: Shawn Mendes Says He's 'Afraid' People Will 'Become Bored' with Him in Vulnerable Social Media Note

"Congress is getting ready to vote on key gun violence legislation," he tweeted. "So please text bold to 644-33 & call your senators to tell them to take action on gun safety now #WearOrange."

At the star-studded event, Mendes was joined by The Chainsmokers, Camila Cabello, Charlie Puth, Diplo, Becky G, and more to celebrate the annual summer event at Dignity Health Sports Park in Carson, California.

Additionally, Ryan Seacrest, Tori Spelling, Jennie Garth, and Jonathan Bennett and his husband Jaymes Vaughan were among the presenters.

The school district in Uvalde has opened an official account with First State Bank of Uvalde to support Robb Elementary families affected by the tragedy. People can send checks through the mail (payable to the "Robb School Memorial Fund") or donate money through Zelle to robbschoolmemorialfund@gmail.com. People can also donate by calling 830-356-2273.