Question: Is there ever a time or condition in which any of our 1st amendment clauses could or should be denied as a right?
I don't think so & setting aside what you mention below, I can't think of any time or condition when any of our 1st amendment clauses could or should ever be denied as a right. Same goes with the entire Bill of Rights and the rest of the amendments, as well as the Constitution in general. Denying constitutional rights requires revoking that agreement, and no one has such authority.
If part of it can somehow be revoked, then that would in effect void the entire constitution, including the parts of it that give the branches of government their power in the first place.
National security issues might warrant something to this effect. The question is what and why? For me, the 1st has become a national defense and security securer, so the prospect of such a need is concerning.
What is national security, or what is it about? Is it something legit, or something along the lines of Orwellian newspeak, doublethink, doublespeak, etc? Is it something that entails protecting and preserving our constitutional rights? If it isn't, then what purpose does it serve? What does the US Constitution say about national security?
I wonder if the expression "national security" was actually conjured up for ulterior reasons and to sucker Americans into willingly and unwittingly giving up their rights, similar to the way "conspiracy theory" serves the purpose of getting people not to pay attention to, ask, or, or wonder about what's going on behind the curtain.