Answer :
Final answer:
The 1969 legal case known as Brandenburg v. Ohio established the imminent lawless action standard, a critical development in First Amendment jurisprudence concerning free speech and advocacy of violence.
Explanation:
The 1969 legal case that marked a reversal of the Supreme Court's traditional position on free speech and established the imminent lawless action standard is Brandenburg v. Ohio. In this landmark case, the Court held that the First Amendment protects speech that advocates for violence or law violation unless it is directed to inciting or producing imminent lawless actions and is likely to achieve that. Thus, it is only when speech is geared towards causing immediate unlawful actions that it loses constitutional protection. This case was significant in safeguarding freedom of expression while balancing it against the need to prevent imminent violence and lawlessness.
