THE COMMUNIST GOVERNMENTS in both the Baltics and Yugoslavia went on a spree of monument-building in the decades after WWII, which, when the ruling paradigms collapsed in the early 1990s, became fraught symbols of a tangled past in the power vacuum of the present. While some of the monuments in these regions were destroyed and others were moved or built around, most have been simply left to age themselves into obsolescence. When the material is concrete, however, the aging-out game can be a long one.