The Catalan government has said 337 people have been injured "by the Spanish state police violence," according to The Guardian.
They have accused Spanish police of responding with a 'go get them' attitude, the Guardian said.
The Catalan foreign minister Raul Romeva has said: "We have initiated contacts with the EU about the violation of fundamental rights that puts the very same EU at risk. We urge Europe's institutions to condemn the violence that European citizens are suffering."
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Nine police officers and two members of the Guardia Civil have been injured in the disorder, according to the Spanish interior ministry.