Now that Salt has appeared on my radar, I discovered it is actually the homebase of a salafist, a certain Mohammed Attaouil, who's expanding his local caliphate from there. There's this chilling article, unfortunately in Spanish, but you can get an idea of what it says here. Warning, it's an automated translation so you'll still have to figure some things out for yourself.
Street view in Salt, Catalonia, not that far from Barcelona. The future of Europe?
One last thing. The mayor of Salt is Yolanda Pineda, of the Catalan Socialist Party (PSC).
But, I suspect you suspected that already.
Hat tip Observatoire de l'islamisation.