This architectural style is called, no kidding, Soviet Brutalism, and was the primary architectural style featured in the Soviet Union from the 1950s to the 1980s. It’s a divergence from Western brutalism, focusing more on utopian and futuristic themes. So, no, it’s not anything political. It’s a cultural thing. Boston City Hall, for example: The campus of the Rochester Institute of Technology, a.k.a. “Brick City”: