Facebook is now in trial due to Two Facebook users they claim their private messages for data were sold to third parties. according to the suit, that was done without proper consent of users. These two facebook users want the suit to be made a class action, and they want other 166 million Facebook users in the usa to join them in their suit as they are eligible to join.
Facebook has about one billion users throughout the world in every country there are many users .
By the way Facebook did not respond to the request because Facebook believes these allegations are useless baseless .