What is happening here is that some independentists patrons are paying for PR around the world and you, guys, are only getting one part of the story.
You don't know nothing about they teaching fake history to kids, stating Colon is Catalonian, stating that the American flag is based on Catalonian flag... These guys are ridiculous and they have been brainwashing their population for decades.
We even have Junqueras (one of the leaders of the movement) telling that genetically, the Catalonian people are better than Spanish people so they need to separate.
Today, you have a lot of young people defending what they have been taught without knowing they are defending a bunch of lies.