Linmark Associates, Inc. v. Township of Willingboro (1977) invalidated an
ordinance that limited “For Sale” signs in neighborhoods on First Amendment
grounds.
Counterspeech Doctrine Cases
The counterspeech doctrine posits that the proper response to negative speech is to counter it with positive expression. It derives from the theory that audiences, or recipients of the expression, can weigh for themselves the values of competing ideas and, hopefully, follow the better approach.
The counterspeech doctrine is one of the most important free-expression principles in First Amendment jurisprudence.
Following are Supreme Court cases that involved the counterspeech doctrine.