The social media company, which allows more critical commentary of public figures than of private individuals, is changing its approach on the harassment of journalists and "human rights defenders," who it says are in the public eye due to their work rather than their public personas.

Facebook is under wide-ranging scrutiny from global lawmakers and regulators over its content moderation practices and harms linked to its platforms, with internal documents leaked by a whistleblower forming the basis for a U.S. Senate hearing last week.

How Facebook, which has about 2.8 billion monthly active users, treats public figures and content posted by or about those figures has been an area of intense debate. In recent weeks, the company's "cross check" system, which the Wall Street Journal reported has the effect of exempting some high-profile users from usual Facebook rules, has been in the spotlight.