In a joint declaration, climate scientists, physicists, biologists, engineers and others from at least 20 countries broke with the caution traditionally associated with academia to side with peaceful protesters courting arrest from Amsterdam to Melbourne.

Wearing white laboratory coats to symbolize their research credentials, a group of about 20 of the signatories gathered on Saturday to read out the text outside London’s century-old Science Museum in the city’s upmarket Kensington district.

“We believe that the continued governmental inaction over the climate and ecological crisis now justifies peaceful and non-violent protest and direct action, even if this goes beyond the bounds of the current law,” said Emily Grossman, a science broadcaster with a PhD in molecular biology, who read the declaration on behalf of the group.