Frisians are Dutch too, and Welsh are British and so on.
All of the above are also Europeans...
Seems polls have between 60-80% of Catalans want independence : http://www.independent.co.uk/news/world/europe/poll-finds-th...
http://www.bbc.com/news/world-europe-29982960
As the urban region of Barcelona has around 5 million residents (7.5 million in Catalunya) the urban areas do have a lot of support for the movement.
In my opinion, nationalist agitprop in Catalonia, more than reaching the independence from Spain, it will "break" Catalan region psychologically in two, because of the polarization, much like it happens in North Ireland or Belgium. I hope it doesn't happen in Barcelona, as it is a nice place to live and invest, with really nice and open minded people.