In 2010, Jeremy Hutton, a 17 year-old-boy with Down syndrome, was shot by a police officer who claimed Hutton was driving right at him. That claim held up in the post-incident review.
Here's a video showing that's untrue (original source), the officer was safely to the side.
We cannot trust police narratives, even if 99% of them are true, because the other 1% involves life and death. Moreover, all video must be made accessible to all parties in a case.
More to come on this case.