Quantum Ghosts
Novella 39,485 words Recommended by 3 award/anthology sources
"The motorcade was late. Security, Robert Dayson thought. You couldn’t have too much security, not since the bombings in Atlanta and Portland and Austin. Not with so many fringe groups so threatening about . . . everything. “The Unrest” the media were calling it, a term that seemed to Dayson unfortunately mild..."
Quasar links out; the story lives on Asimov's, where the author gets the click.