But Berliners complained the loudest. They felt threatened by the Wall's new porosity. The almost forgotten phrase "Polish housekeeping"--meaning chaos and disorder--resurfaced. A few people said outright what they didn't like about the Wall: it wasn't solid enough. Finally people saw, and admitted to seeing, how good they had it living in the western shadow of the Wall. It cost nothing to assail the oddity as a "Wall of Shame," so long as its builders in the East maintained it and made sure it had no holes. [...]
in the spring of 1989, right after the Polish regime made it easier for its citizens to travel to West Berlin and thousands of Poles arrived and set up a flea market near Potsdamer Platz, to the chagrin of many West Berliners