One of the most influential figures in the international art world, Germano Celant is best known for identifying and promoting Italian arte povera, the ’60s movement that was the centerpiece of the conceptual-minimalist movement in Europe. His lecture, “The War of the Body: Contemporary Art 1960s/1980s,” will contrast two artistic generations, one the poetic/allegorical, the other cynical/confrontational. Sunday at 4:30 p.m. at the Hirshhorn Museum & Sculpture Garden’s Ring Auditorium, 8th & Independence Ave. SW. FREE. (202) 357-2700. (Martha McWilliams)