I thought it was good at focusing at the victims without prying too much. Especially, asking a Columbine survivor was a good idea.
But as far as commenting on James Holmes, it wasn't that accurate. He didn't work at Mc Donalds and he did have internet accounts other than the dating profiles. And it's probably safe to say he had depression since at least in one study 100% of school shooters suffered from depression. Any other mental condition is difficult to specualte now, anyway.
As far as information goes this documentary was clearly rushed but if it was about something else, then it was probably good.
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Knowing / that I could walk seventeen miles through a ravine / in the heart of Toronto,
and never / directly see the city/ is of some comfort