There's probably not much constructive discussion to be had on the event here. These are social problems at their roots, not technical ones.
It is obviously a "hard and controversial" problem to discuss - I don't really understand why. I sense it has something to do with the upcoming US election and maybe there is a lot of campaigning being done online.
HN in general has good discussions on economics and social issues but not on this.
And yet this text pops up on the front page of hacker news.
I assume it is because of the events in Dallas; but why discuss this text and not the actual event or a million other things related to the topic of race and racism?