You need moderation both ways.
Yes to the First.
But also yes to the cops arresting a kid who posts on social media that he’s gonna kill all his classmates tomorrow morning.
Bonus points if the cops arrest him before he goes to school tomorrow.
Couching threats of violence in political language shouldn’t change anything in that regard.
(Well, it does these days. But it shouldn’t. That’s how you get kids gunned down at prayer.)
Anyway, bottom line is, adherence to the First doesn’t mean we abandon law enforcement, or military sense.