>Dozens of children’s advocacy groups have called on Facebook CEO Mark Zuckerberg to scrap plans for a version of photo-sharing and body-shaming app Instagram for kids under 13, saying it would “put young users at great risk.” >Facebook, Instagram’s parent company, is working on “a version of Instagram that allows people under the age of 13 to safely use Instagram for the first time,” according to a Buzzfeed report last month.