Climate activists on Sunday accused police of "pure violence" after clashes during a demonstration at a German village being razed to make way for a coal mine expansion.
In an operation that began on Wednesday, hundreds of police have been removing activists from the doomed hamlet of Luetzerath in western Germany.
Protest organisers reported that dozens had been injured in clashes with police.
Indigo Drau, a spokeswoman for the organisers, on Sunday told a press conference the police had gone in with "pure violence".
Officers had "unrestrainedly" beaten protesters, often on the head, she said.
Activists on Saturday had accused the police of using "massive batons, pepper spray... water cannons, dogs and horses".
At least 20 activists had been taken to hospital for treatment, said Birte Schramm, a medic with the group. Some of them had been beaten on the head and in the stomach by police, she said.
Organisers said that 35,000 protesters demonstrated on Saturday. Police put the figure at 15,000.
A police spokesman said on Sunday around 70 officers had been injured since Wednesday, many of them in Saturday's clashes.
Criminal proceedings have been launched in around 150 cases, police said, including for resistance against police officers, damage to property and breach of the peace.
The situation on the ground was "very calm" on Sunday, the police spokesman said.
Read more on FRANCE 24 English
Greta Thunberg joins anti-coal activists at protest in German village
German police move to clear coal mine protesters in flashpoint village
Germany's biggest power producer RWE to phase out coal by 2030