Arizona Common Law – Freedom of Speech
Arizonans enjoy the freedom of speech from the United States Constitution and from the Arizona Constitution. 
https://commonlawaz.wordpress.com/arizona-constitution/freedom-of-speech/

First Amendment Coalition of Arizona
http://arizonafoi.com/

Student Press Law Center
Advocate for student First Amendment rights, for freedom of online speech, and for open government on campus.
http://www.splc.org/

ACLU-AZ – Free Speech
Freedom of speech, the press, association, assembly, and petition: This set of guarantees, protected by the First Amendment, comprises what we refer to as freedom of expression. The ACLU has worked since 1920 to ensure that freedom of speech is protected for everyone.
https://www.acluaz.org/en/issues/free-speech