Impartial reporting does not mean trying to make the reader remain emotionless or avoid coming to judgement. Facts themselves will frequently stir strong emotions. For instance in this incident even the most impartial reporting of the facts is likely to leave most readers with nothing short of disgust for the alleged offenders. The facts speak for themselves.

An excellent resource I linked above is this [1]. That's a series of historic articles from the NYT on famous events throughout history. You'll invariably find quite impartial articles, yet the facts themselves again speak quite loudly. This [2], for instance, is their reporting on the sinking of the Titanic. That is just an incredible piece of reporting. And though there are absolutely 0 emotional cues used or even implied, one can nonetheless 'feel' the story through the facts alone.

[1] - https://archive.nytimes.com/www.nytimes.com/ref/opinion/samp...

[2] - https://static01.nyt.com/packages/pdf/archives/Disasters-Tit...