Barca players celebrate

Barcelona and Real Madrid could have to put up with new problems after pro-Catalan independence activists announced plans to protest on Clasico day.

Camp Nou

The Tsunami Democratic protest group is planning on matching in the streets on December 18.

Tsunami Democratic says more than 18,000 supporters have already committed to joining its protest, including many who have tickets to the Clasico.

Tsunami Democratic said: “In an exceptional situation, it is necessary to act exceptionally.”