The Danish parliament today passed legislation which will give police sweeping powers of "pre-emptive" arrest and extend custodial sentences for acts of civil disobedience.
The "deeply worrying" law comes ahead of the UN climate talks which start on 7 December and are expected to attract thousands of activists from next week.
Under the new powers, Danish police will be able to detain people for up to 12 hours whom they suspect might break the law in the near future.