When, if ever, should the government be permitted to restrict free speech

Well this is a huge question, the government will probably have a hard time restricting all of the United States permission of "Free Speech", while they probably can in private property, and other private areas that civilians wish to pass through, they won't necessarily be able to restrict "Freedom of speech", unless it's threatening anyone or anything such as a business or a v.i.p.

One of the founding principles of the United States that Americans cherish is the right to freedom of speech. Enshrined in the First Amendment to the Constitution, freedom of speech grants all Americans the liberty to criticize the government and speak their minds without fear of being censored or persecuted.

Right?

Even though the concept of freedom of speech on its face seems quite simple, in reality there are complex lines that can be drawn around what kinds of speech are protected and in what setting.

i'll write a docs for you. hold on for a moment

an early twentieth-century ad for model home blueprints