Facebook’s Internal Dislike Button: Protecting The Brand By Rejecting Unflattering Posts

http://www.ibtimes.com/facebooks-internal-dislike-button-protecting-brand-rejecting-unflattering-posts-1813120

Facebook was in the headlines last summer about their algorithm, when it came out that Twitter algorithm suggested the riots in Missouri in a very different way.
Facebook has been in the headline numerous times regarding their privacy issues
Who is holding a private company responsible about acts like this?Should it be hold responsible?