Bravery is rarely conveyed as vividly as it is in "The Hunting Ground," Kirby Dick and Amy Ziering's look at the crisis of sexual assault on college campuses, in which dozens of survivors sit down in front of the camera and tell their stories without disguise.

The statistics are jarring enough -- one woman out of five will have been assaulted by the time she graduates college; other numbers show that universities across the United States have taken no meaningful disciplinary action to resolve assault complaints.

The filmmakers evoke plenty of outrage at a rigged system that appears to have been so corrupted by the pursuit of financial gain that the most basic ideals are inexorably compromised.

They build a strong and comprehensive case in a movie that offers an essential grounding in one of the defining issues of our time, with the Justice Deparment and figures such as Sen. Kirsten Gillibrand spearheading action against it. It's hard not to feel unrelenting despair.

But the women and men who come forward, who refuse to hide as they reveal the horrific depths of what happened to them and demonstrate their steadfast resolve to change the system, they are the light in the darkness.