Banned & Challenged Books "ALA compiles data on book challenges from reports filed by library professionals in the field and from news stories published throughout the United States."
FIRE "The Foundation for Individual Rights and Expression's mission is to defend and sustain the individual rights of all Americans to free speech and free thought — the most essential qualities of liberty. FIRE educates Americans about the importance of these inalienable rights, promotes a culture of respect for these rights, and provides the means to preserve them."
Pew Research Center "a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping the world. It conducts public opinion polling, demographic research, media content analysis and other empirical social science research. Pew Research Center does not take policy positions."
TED Talks "Discover ideas worth spreading."