Hart also took to Instagram to share a sweet photo of Pink holding Jameson at the protest, alongside a powerful note.
"Very proud of my wife, and it was really special to march in the streets with my family today," he wrote, before sharing another photo of Willow riding on his shoulders. "I think it's embarrassing that government has a say is what my wife or my adult daughter does with their body. I'm a big believer in staying in your lane. Don't like what I'd do or say? Don't pay attention. It isn't your business. So how about government say out of women's business?"
The Hart family weren't the only famous faces in the L.A. march's crowd of 750,000. Miley Cyrus, Laverne Cox, Kerry Washington, Juliette Lewis, Lily Tomlin, Kesha, Ariana Grande, Mandy Moore, Jessica Biel, Vanessa Hudgens, Marcia Gay Harden, Jodie Sweetin, Helen Hunt, Melissa Benoist, Gina Rodriguez, Jamie Lee Curtis, and Natalie Portman all turned out for the event.