Walls continue division. They shun neighbors. They block communication. The defining moment that signaled the end of the cold war was when the Berlin wall came down. It’s been said by poets and politicians alike: What if we could one day live in a world with no walls? 2 below zero’s Diane Richard went to a part of the world where walls are deeply ingrained in the history, Northern Ireland. They have become part and parcel of everyday life there as well.