The rhetoric of Catalan politicians when I lived there. "Good Catalans speak Catalan" was something i heard bandied around. Didn't a Barcelona mayor say that some time ago? Newcomers to Catalonia offered free Catalan classes by the Generalitat, but not free Spanish classes despite the fact that immigrants overwhelmingly want the latter. Criticism of those who referred to "Spain" and not "The Spanish state".
On another note, i found Catalan nationalism to be pretty middle class. It would be interesting to see the class breakdown of independence support, and maybe someone on here can point in the right direction.
The most working-class area I can think of in Barcelon is L'Hospitalet de Llobregat. It was strongly anti-independence, whereas funky bohemian Gracia was the opposite. I've got a feeling that there is a class divide that still exists now.
Super-rich - Pro-Spain.
Lower middle class and middle class - Pro-independence
Working class and immigrants from Africa/South America - Pro-Spain.
Age demographics will blur this, but I think that would be broadly true. What are other posters thoughts on this?