I don't see the issue in describing Spain's recent history and how that relates to the place of the race. Contentious value-judgements of political valour can be avoided. It'd only be a problem if the OP makes a reasonably contentious point that couldn't be addressed by those who disagree without violating GRAPES.Politics is tied up with almost everything, more so with history than with most other things, and the line between the two becomes increasingly blurred the more recent history becomes. Thus, a rule against talking politics (which is absolutely needed in some form or another on the main board) is in practice a rule against getting overly political, and thus said rule inherently involves a lot of grey area.
And that creates strange situations. Nobody is going to bat an eyelid if I call, say, the Albensian crusade a genocide in an OP, because it happened 700+ years ago, but had the Giro start in Israel occurred this year rather than in 2018, there is absolutely zero doubt I would have faced moderator action had I discussed what is going on in Palestine right now in the same terms. And there are plenty of situations in between those two in terms of controversiality - can I, for example, discuss the Rwandan genocide in an OP when the peloton goes to Kigali next month? I frankly don't know.
It's especially problematic in areas with more politically controversial recent histories, and I'm really noticing it when deciding what I talk about during this Vuelta. You have a right-wing dictatorship well within living memory and long-standing, ongoing histories of separatism that are vital to explaining Catalonia and the Basque Country in particular. It's impossible to discuss the past century or so of pretty much anything in Spain while ignoring either (heck, the latter is also integral to the Vuelta's history), but at the same time I know full well that both subjects are touchy to say the least. Here, too, I often frankly don't know where to draw the line between politics and history, because said line is really arbitrary.
All I have to say is, thank *** there are no major bike races in the US. It would be impossible to do OPs the way I want to in GTs for any race there.
So I don't see the issue in neutrally describing the unconstitutional referendum in Catalunya.