“King Don promised his subjects that he would build a big, beautiful barrier to keep the invaders out.”

“Sometimes, even the language barrier cannot keep like minds apart.”

“You can only get through the barrier after you scan your valid ticket.”

“We are ushered through another checkpoint and eventually the road ends at a couple of watchtowers and heavily guarded barriers.”

“Tariffs and import quotas were, in the 1950s, still the principal barriers to trade.”

“It now appears that the description of someone jumping over the barriers could in fact have been of a police officer in pursuit of his quarry.”