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Protesters in Madrid have targeted a branch on Spanish bank Santander, smashing windows and scrawling graffiti blaming the bank for the financial woes of the country.
Main roads in the Spanish capital remain closed with multiple fires raging as firefighters try and keep up with protesters.
Left-leaning Spanish news organisation La Tuerka claims its photographer was "assaulted and arrested by police" at a protest march in Madrid.
It uploaded this footage of the incident:
Tens of thousands of people are out on the streets of Barcelona protesting against the austerity cuts.
There are lots of families, students and union members. Plenty of firecrackers are going off but everything appears peaceful.
Footage uploaded by YouTube user CrisisEsVacuidad shows protesters clashing with riot police on Madrid's Gran Vía this morning.
Latest ITV News reports
Police and protesters clashed in Spain, Italy and Portugal as millions of workers went on strike to challenge to austerity policies.
As well as strikes across Europe, today has also produced figures that may convince people at the top that austerity is self-defeating.