Sorry, I fail to see how denouncing a coup and a dictatorship is off-topic in a post about stealing children under a dictatorship. Maybe I'm wrong but I think defending democracy and denouncing a fascist regime should not be seen as generic ideological but common sense.
We're trying to avoid denunciatory rhetoric on inflammatory topics, regardless of how right or obvious your views are or you feel they are. It's a kind of reductio to a hellish internet end state, and there's nothing more destructive to curious conversation, which is what HN threads are supposed to be for.