How far will this lunatic attitude that walls are bad and that countries are not entitled to defend their borders go? This attitude runs as an undercurrent below this article.

It wouldn't be unreasonable to speculate that this crowd may stoop further and start lambasting Canada for having a rugged and inhospitable terrain that is virtually a "wall." 

I can just see the woe sayers going bonkers at the thought of the treacherous conditions that prevail on either side of the border in winter.