“We know that there’s a lot of work to be done.”

Meghan Markle and Prince Harry have been longtime advocates for mental health, and they’re currently working on a new project that will combat the impact social media and internet bullying can have on children. In a preview for an upcoming CBS interview with the Duke and Duchess of Sussex, Markle reveals why they feel compelled to find solutions for online bullying. And it has a lot to do with their own kids, Archie and Lilibet.

“Our kids are young,” Markle tells CBS Sunday Morning‘s Jane Pauley in the clip shared on X. “They’re amazing. But all you want to do as parents is protect them.”

The initiative, which is called The Parents Network, will work with the Archewell Foundation to provide support to both kids and adults who are affected by the internet. In the trailer for the interview, which is set to air on Sunday at 9 a.m. ET, Markle explains that there’s “a lot of work” to be done in the space.

“As we can see what’s happening in the online space, we know that there’s a lot of work to be done there, and we’re just happy to be a part of change for good,” she added.

In the clip, Harry chimes in with some of the “terrifying” effects that internet trolling can have on mental health.

“We’ve got to the point where almost every parent needs to be a first responder,” he said. “And even the best first responders in the world wouldn’t be able to tell the signs of possible suicide. That is the terrifying piece of this.”

A friend of the couple recently told People that Harry and Meghan’s efforts to protect their kids include keeping them out of the spotlight as much as possible.

“Harry has been reluctant to show his children publicly, not out of a desire to hide them, but to protect their privacy and safety from potential threats,” the source said. “He wants them to lead as normal a life as possible without the fear of kidnapping or harm.”