Chapter 3 discusses freedom of speech, including its protection under the First Amendment and the regulation of various communication media. It explores the complexities of censorship laws, such as the Communications Decency Act and the Child Online Protection Act, and their ramifications on free speech and expression online. The chapter also addresses recent legal cases and societal issues surrounding topics such as obscenity, violence in video games, sexting, and the implications of leaks related to whistleblowing.