We need to be talking about the political implications of what we've built, and figuring out how to fix our mess. This is like the period before the hurricane: everyone should be busy boarding up windows, and you can't do that if you decide you're just not going to talk about the coming storm because it makes you feel bad.
Silence assists certain forms of repression.
There are tons of political forums where ppl can express their opinions and discuss them.
It just does not have to be here.
In fact, sub-reddit provides all the specialization you could need; I think "demographic" is usually what is valued in HN.