With photos from the German Wikipedia, here is the same section in 1985, 1987 (when everything "inappropiate" was painted over behind Reagan) and 1989:

The image I had in my mind when you said "graffiti" was more like the last one. But I see that one contains some left-radical texts, too. (I also found the rest of the early eighties slogan on the right: it translates to "Allies and Imperialists Go Home!" in full.)

_{*Lunatic*, n.
One whose delusions are out of fashion.}