What conclusion can you draw by connecting Hillquit’s quotation, with your knowledge of that the time?

It would be the following lines:
I let my neighbour know beyond the hill; 
And on a day we meet to walk the line
And set the wall between us once again. 
We keep the wall between us as we go. 

Other lines talk about not needing the wall while these lines talk more of them helping each other to set the wall once again.