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MADRID: Around two thousand protesters took to the streets of the Spanish city of Bilbao on Sunday to condemn the Basque police’s treatment of activists from a Gaza aid flotilla on their return from detention in Israel.

When a relative of one of the six returning activists tried to approach them at Bilbao airport on Saturday, a police officer forcefully prevented him from doing so, leading to scuffles between both sides, images from state broadcaster TVE showed.

Images showed police striking people with batons and pinning others to the ground while being jeered by onlookers. Before this, activists appeared to have blocked the exit for other passengers and police tried to move them.

Four people were arrested for serious disobedience, resisting arrest and assaulting law enforcement officers, the Basque regional police force, the Ertzaintza, said in a statement on Sunday.