Group of "mombies" host "Thriller" flash mob with a purpose: to raise money for breast cancer

A group of moms, called "mombies" get zombified and host a Halloween flash mob to Michael Jackson's "Thriller" each year. Since 2016, the group has almost doubled in size, with weeks of rehearsals, two different shows and a purpose: to raise money for breast cancer. Tony Dokoupil has the story.