Free Speech, Posner.
Where the government creates a facility for communicative activity, it is inappropriate to look beyond the four corners of the speech itself in determining whether the speech can be barred.
Bus ads -- with image and Hamlet quote.
Women's Health Link, Incorporated v. Fort Wayne Public Transportation
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.