The sculpture was a large red flower atop a black box. The petals of the flower appeared to be inflated and were slowing moving, as if the flower were breathing.

The sign on the flower read in part:

Breathing Flower, 2012
By Choi Jeong Hwa (Korean, b. 1964)
Fabric, LEDs, motor
Lent by the artist

This work of art is part of Phantoms of Asia: Contemporary
Awakens the Past, an exhibition at the Asian Art Museum,
across Larkin Street from this installation. Phantoms of Asia
features provocative contemporary and traditional art exploring
spirituality throughout Asia. The exhibition is on view from
May 18 to September 2, 2012.

For Breathing Flower, internationally acclaimed Korean artist
Choi Jeong Hwa created an enormous lotus blossom from
sheets of red fabric. The large lotus appears full of life, its
petals slowly inhaling and exhaling, simulating the movement ...

Here was the flower in the context of the Pride Parade Festival. Nestled among booths it became just another part of the background.

Another angle on the Breathing Flower that shows better detail of the fabric petals. The movement as it breathed was for the petals to settle down (droop) and then to rise back up again.