Hundreds of workers from McDonald's, Taco Bell, Wendy's and other fast-food chains walked off their jobs today. It's part of a national protest to push the companies to pay employees at least $15 an hour. Organizers say they plan to engage in nonviolent civil disobedience. They also say home-care workers will join the protests, which are expected to take place at fast-food restaurants in 150 cities nationwide.