One of the women, Caris Connell, said she was scared of “forest fires, water shortages, famines, and war.
“Dinosaurs died out, because they could not withstand massive changes to the climate. That is also threatening us,” added the 34-year-old.
The other activist, Solvig Schinkoethe, said as a mother of four, she feared the consequences of climate change.
“Peaceful resistance is the way we have chosen to protect our children from the deadly ignorance of governments,” said the 42-year-old.
They called on the government in Berlin to take quick steps to cut emissions, such as by setting a speed limit on motorways and introducing more affordable public transport.
The museum said police brought the incident to an end in under an hour. There was property damage, and criminal charges have been filed, it said in a statement.
The activists were from the group Last Generation, which earlier this month splashed mashed potatoes on Claude Monet’s $111-million “Les Meules” (Haystacks) at the Museum Barberini in Potsdam, Germany.
In recent weeks, climate activists have also glued themselves to Johannes Vermeer’s “Girl with a Pearl Earring” at a Dutch museum, and thrown soup at Vincent van Gogh’s “Sunflowers” at the National Gallery in London.