Push and pull.. the string.
you control the distance;
you control who stays and who don’t;
you pull it backward to permit few to be close..
not close enough to hurt; to see the scars; to reveal the secret.
you lock them away ( or maybe yourself ) in the safe zone.
Nobody can / will cross the line;
And if someone did ! “even if its unintentionally”; you push it strongly forward to the farthest it can be;
You know you need some of them around; You pull it back and when you feel the danger .. the string becomes in its loosest forms.
You know you are building your wall so high that no one can climb it.