Let us consider the 2nd Amendment.
For centuries, this amendment was interpreted to guarantee the right of a civilian militia, the National Guard. Our founding fathers were afraid of a central government controlling all the military power.
And then, there was a justice who decided (and convinced others) that this interpretation was somehow outdated. Surely in our time, the right to bear arms should be guaranteed to individuals. After all, the vast majority of Americans agreed. And as had happened in the field of Civil Rights, abortion and other areas, the Supreme Court made a decision that changed the precedent of centuries.
Guns were now a right of individuals. And who was it that changed the interpretation in this way? Scalia.
BTW, I am NOT in any way arguing with this decision, any more than those having to do with civil rights and abortion.