Question

which is an example of restricted free speech?
promoting an idea that is unpopular with most people
telling everyone you lost your job when you are still employed
revealing a confidential e-mail that was sent to you by mistake
writing an article that urges people to violently protest unfair treatment

Explanation:

Restricted free speech refers to speech that is not protected under law because it poses a clear, immediate harm or violates legal/ethical boundaries. Unpopular ideas are protected free speech. Lying about employment status is a minor falsehood but not restricted speech in the legal sense of free speech limitations. Accidentally received confidential emails may have privacy concerns, but the core restricted free speech category here is speech that incites imminent violence. Speech urging violent protest falls into unprotected, restricted free speech as it incites harm.

Answer:

writing an article that urges people to violently protest unfair treatment