It was after a late screening and the group of several hundred was aggrieved, its moral hackles raised.
"How could they treat him so badly?" one audience member asked.
"An injustice," said another.
"What can people do with their frustrations?" asked a third.
The setting was neither a courtroom nor an activist meeting. It was at the Sundance Film Festival, and the assembled had just watched "The Internet's Own Boy," Brian Knappenberger's quietly evocative look at wunderkind hacker Aaron Swartz, whom the film suggests was driven to suicide in 2013 by a zealous federal prosecutor in Massachusetts.
"We have real...