"It honestly gets me choked up, because I think this is the generation we've been waiting for," Bell said. "They're the ones who are going to get it done and it's just really inspiring to watch."
The March for Our Lives rally, which served as a protest against gun violence, took place in Washington D.C. on Saturday, with more than 800 additional, related demonstrations held across the nation.
The event -- coordinated by student organizations and the non-profit gun control advocacy group Everytown for Gun Safety -- reportedly drew more than two million participants across the country, making it one of the largest political demonstrations in American history.
Bell, 37, said that, as a mom, she has a boundless appreciation for protesters and their efforts to increase gun safety and end gun violence.
"Knowing that these kids have a genuine chance of making things a little bit better for when my kids go to school, I am eternally grateful," said Bell, who shares two daughters with husband Dax Shepard - - Lincoln, 4, and Delta, 3.
"I know it's going to be an amazing night, but kids everywhere have already made it an amazing day. So I just want to take a moment to celebrate what kids across the nation accomplished today," Cena told the crowd as videos and images from the nation-wide protest played on the screens behind him. "From Washington D.C., Florida, even here in Los Angeles, all over the country, all over the world, kids made their voices heard with the incredible March for Our Lives, and it all happened because you want to make the world a better place."