Yea for sure - some truth is a construct.....but im not a believer of a subjective reality when it comes to certain things that i feel we can observe as concrete. Such as concrete itself. But it still has merit to seek it out (truth) whatever it is.....until life's end in my opinion.
A bit of a digression, but a worthwhile one.
I agree with your final statement.
My question to you....what role do you have in protecting your rights ?
Id put it like this:
I have a natural instinct to want to stay alive.
i realize i am not the toughest man on earth.
i believe living is worth while.
therefore - i believe in securing the right to life for myself and my fellow humans, even if it means self sacrifice and that last part (self sacrifice) is based purely on my empathy/emotions/love and not on reason.