YouTube has been subject to threats of censorship by various countries because of the content it hosts.It was blocked from Mainland china from the October 18, due to the censorship of the Taiwanese flag.URLs to YouTube were redirected to Mainland china's own search engine,Baidu. It was subsequently unblocked on October 31.
Schools in certain countries have begun to block access to YouTube due to students uploading videos of bullying behavior,school fights,racist behavior,and other inappropriate content as well as the increased bandwidth usage.