De-light-ful Spanis interventionists Luzinterruptus have taken over Madrid’s public art. Why so serious? So guarded? So heavily under video surveillance, behind fences, huffy, unwelcoming? In a three hour installation Touch! Play! Nothing Happens!, the crew outfitted the city’s statues and sculptures with many, many glow-bulb-equipped nipples. Nipples all over! Nipples! Nipples! Nipples! For a moment there, the stone slabs and blobs were that much more approachable, huggable and pinch-able. Tee-hee-hee.