AdvertisementFacebook Changes Its Mission With Announcement About GroupsJune 22, 2017Aarti ShahanifacebookEmailFacebook CEO Mark Zuckerberg (right) speaks with panelists at the Facebook Communities Summit on Thursday in Chicago, where he announced Facebook's mission will change to focus on the activity level of its users. From left are Lola Omolola, Erin Schatteman and Janet Sanchez, who run popular Facebook groups. (AP)