For example, a story about a new data analysis tool or technique used by police would presumably still be on topic. Would a comment discussing how this tool might disproportionately affect minorities be considered off-topic politics? If that story is allowed but the discussion about race is not, the marginalized people might feel like they need to go elsewhere.
1. Present a new data analysis tool used by police
2. Comment about disproportionately affect minorities
3. Response with FBI data explaining it's because certain minorities commit more crime
4. (devolves into flame fest)
... n. Complains marginalized people might not read the site
n+1. That's their personal choice
n+m. (more flame fest)
And hence why suggesting the content here stay technical instead of political is the best of several non-perfect choices.
It's sort of like saying "oh, I don't see race". Well, everyone else does, and not acknowledging racism is just about as bad as actually being racist. Ignoring a problem doesn't make it go away.
And another analogy, telling people there are more appropriate places to discuss politics is sort of like people telling Black Lives Matter/Colin Kaepernick/etc. to please protest in a more appropriate manner. There's no point in "appropriate" protests and appropriate forums, they are ignored. You have to bring this stuff up in places where people want to ignore it, otherwise nothing will ever change.
HN will get really messy if the comment board becomes a place to protest.
IMO bringing your political grievance de jour to a tech site like HN is a sign of immaturity. Telling these people to grow up or leave isn't a bad thing. Conservatives lived through Obama and liberals will do fine under President Trump.
All I'm trying to say is that it's important to recognize that you are adopting a political position here, even though it doesn't feel like it. I'm not trying to say you're wrong, just that you have to acknowledge you have a position, and you can't escape by calling something a "political grievance de jour". That itself is a political statement.
Thank you for the good conversation.