Current Affair: Tens of thousands in Spain protest against Catalonia independence

Tens of thousands have taken to the streets across Spain to call for unity and dialogue, as the country faces a critical test of Catalonia's demand for independence. Catalan leaders say they may declare independence within days, but Spain's Prime Minister warns that won't have any effect. Ivan reports.

People with Spanish and Catalan flags gather during a rally for unity in downtown Barcelona. Source: AAP