 Inspired by King's contention that "the arc of the moral universe is long, but it bends toward justice," Ma projected a line of light on a wall in King's former neighborhood.The line would vibrate, bounce, ricochet, or bend into an arch when audience participants whisper, speak, sing, or shout into the microphones that dotted the field, visualizing the collective force of human voice and breath.In public art projects, Ma holds on to the idea of the public as a part of her work in attempt to give back to society.