Facebook has been replacing traditional media channels since its founding in 2004. Censorship in the media, especially on Facebook, is due to a variety of reasons, since Facebook accepts all kinds of content, with little or no moderation. Because the site indiscriminately displays material posted by users publicly, Facebook effectively can sometimes threaten oppressive governments (especially in totalitarian regimes), while also propelling fake news, hate speech and misinformation, thereby undermining the credibility of online platforms and social media. Many countries have banned or temporarily limited access to the social networking website Facebook, including China, Iran, Syria, and North Korea. Use of the website has also been restricted in various ways in other countries. As of May 2016, the only countries to ban access around the clock to the social networking site are China, Iran, Syria, and North Korea. However, since most North Korean residents have no access to the Internet, China and Iran are the only countries where access to Facebook is actively restricted in a wholesale manner.