The Berlin Wall Offers Lessons on Why Trump’s Wall Won’t Work

East Germany built a barrier that was only strong for its time and place.

Imagine scrambling over this wall while people shoot at you.

A few weeks ago, I published a piece on some of the great walls of history — and why many of them failed to hold back invasion and infiltration. I received some comments about how the Berlin Wall, which divided Berlin from 1961 to 1989…