A group of semi-naked climate protesters crashed the British Parliament's lower chamber Monday during votes.

Roughly a dozen people stripped in the viewing gallery over the House of Commons, where strategies for handling Britain's planned exit from the European Union were under debate.


Climate activism group Extinction Rebellion claimed responsibility for the protest.

"Extinction Rebellion activists strip off in House of Commons public gallery to call attention to the ‘elephant in the room’ — Climate and Ecological Crisis," they tweeted. 

The group says they work to "support and encourage a citizens uprising in the UK" to address the threat of extinction. The protesters say climate change should be a bigger issue than the country's ongoing debate over Brexit.

Police arrested 12 of the protesters on public indecency charges, according to the Evening Standard.