> What HN does is less obtrusive
Agree. I often have to click around to figure out why the black bar has shown up.
> less likely to stoke heated division amongst its users
This is interesting. Why does #BlackLivesMatter stoke heated division among HN users? And what does that say about the community that has been built here?
> and more relevant to the content of the site
I'm sure I don't agree. As the world moves further into automation, machine learning, machine analysis, and sousveillance, the interaction between technology and minorities in our communities is of vital importance to what we do. Questions of interaction between minority developers, customers, users, and community members and the majorities in those spaces impact on questions like hiring policy, behavior analysis and prediction (and the benefits and drawbacks of those tools), unequal treatment laid bare when the cameras are in the hands of the many and not the few (and the consequences of that knowledge), software that only works for a subset of users optimally because it was designed with only those users in mind, and other topics.
Software is growing to touch every part of human existence, and it's probably actually dangerous for hackers to traipse through life ignorant of that fact. We build things that impact people in a huge way, and if some groups are structurally invisible to the builders of those things, we really risk baking inequalities into the very engines of our society.