The clash is likely the first salvo in a pending European battle over Twitter's runaway hate speech under Musk's regime.
The German government has confirmed it will provide Ukraine with Leopard 2 battle tanks and approve requests by other countries to do the same.
Poland needs the consent of Germany, which builds the tanks, to send them to a non-NATO country.
German police have detained the Swedish climate activist twice in the past three days.
"The science is clear, we need to keep the carbon in the ground,” the Swedish activist said.
Irmgard Furchner was accused of being part of the apparatus that helped the Nazis' Stutthof concentration camp function during World War II.
Debris, water and more than a thousand tropical fish spilled out of the AquaDom tourist attraction in central Berlin.
Some 3,000 officers conducted raids at 130 sites in 11 of Germany's 16 states against adherents of the so-called Reich Citizens movement.
The woman was jailed on suspicion of attempted manslaughter following the incident at a hospital in the southwestern city of Mannheim.
Police have launched an international hunt for the thieves and the loot taken from the Celtic and Roman Museum in Manching, Germany.