BBC News reports that a seventy-seven-year-old Frenchman has spent a night in custody in Paris after attacking Marcel Duchamp’s Fountain, 1917, on display at the Pompidou Centre as part of a wider exhibition on Dada. Police said the man, who claimed that Duchamp would have appreciated the gesture, had urinated on the same piece at an exhibition in Nimes, southern France, in 1993.