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Instances under investigation include vans running over demonstrators
Media professionals group ask for ministers in charge to step down, as one photojournalist was arrested on Friday
One person in very serious condition, as protesters play cat and mouse game with police, whose operation is also in the spotlight, especially among journalists
Political anger as neo-nazis march through Barcelona on another night of violence and chaos
Barcelona's key avenues cut off and spontaneous marches start as heavy police presence guards country's main infrastructure points