Are presidential candidates tracking your Facebook profile?

Aired: 7/31/2015 | 0:03:48 | Clip
Facebook is offering new tools for political candidates, and your personal account could be used in the process. For the first time, Facebook is allowing campaigns to track users’ political comments and likes to create a master list of target voters and potential donors. Ashley Parker, reporter for The New York Times, joins Hari Sreenivasan for more.