There's a similar extremely visible movement in Barcelona. Tourism has always been a soft version of colonialism, but in Mallorca, Menorca, Formentera, Ibiza, Barcelona, and Valencia, it does double duty. These regions are economic powerhouses for Spain, but they're former autonomous societies that were conquered and colonized by the Kingdom of Castille.
While traveling there you're likely to meet people who speak Spanish, German, English, and French out of necessity to communicate with tourists, but even speaking Spanish in these areas is an insult to their autonomy. The native language of Mallorca is Balearic Catalan. If you go to the Basque country and don't speak the Basque language, you're going to get some pushback. There's a similar independence movement centered in Barcelona but popular throughout Aragon, Catalonia, and the Balearic Islands, and assuming the people you meet prefer to speak Spanish adds another layer of colonialism on top of the tourism.