Words won't protect you. Precedent won't protect you. Guns won't protect you. If you are in a society where others want you surveiled or dead or removed or heavily restricted, and you're outnumbered, it's already too late. As you say, for many people already "Constitutional" is just a weapon to be wielded when it suits them and ignored when it doesn't. But the reason why that's bad needs to be much more than "because this piece of paper says so," it needs to be "because these are things we all agree are important."