Hundreds of thousands of people have been on the streets of barcelona in a huge show of support for the unity of spain and against plans for the independence of catalonia. Spains worst political crisis for decades was sparked a week ago by a referendum on independence for the wealthy North Eastern region. Spains Prime Minister has warned of drastic action if that happens. Our europe editor katya adler reports from barcelona. Chant viva catalonia viva espana catalans who oppose independence from spain call themselves the silent majority. Today they made a lot of noise. We want to stay together. We dont want to break this country. I am catalan. I am spanish. And today im here because im very proud. And i dont want that catalonia go out of spain. Everyone we spoke to here was catalan but people came from all over spain in the name of spanish unity. This crowd is emotional, excitable and passionate because this is all about identity, their identity. Whether catalonia remains in or outside