Censorship is the act of suppressing or restricting access to information, speech, or media by governments, organizations, or other authorities. This is often done to control public opinion, prevent the spread of certain ideas, or maintain power. Censorship can take many forms, including blocking websites, removing content from social media, or prohibiting the publication of books and news. While sometimes justified for reasons like national security or preventing hate speech, censorship can also limit freedom of expression and restrict access to important information.