Richard Serra

an American minimalist sculptor and video artist known for working with large-scale assemblies of sheet metal. Serra was involved in the Process Art Movement.

In 1981, Serra installed Tilted Arc, a gently curved, 3.5 meter high arc of rusting mild steel in the Federal Plaza in New York City. There was controversy over the installation from day one, largely from workers in the buildings surrounding the plaza who complained that the steel wall obstructed passage through the plaza.