Protesters have thrown soup at the glass-protected Mona Lisa in France, calling for the right to "healthy and sustainable food", reports BBC News.
The 16th Century painting by Leonardo da Vinci is one of the world's most famous artworks, and is held at the Louvre in central Paris.
The Louvre said the work was behind protective glass and was not damaged.
Video shows two female protesters wearing T-shirts that read "food counterattack" throwing the liquid.
They then stand in front of the painting, saying: "What is more important? Art or the right to healthy and sustainable food?
"Your agricultural system is sick. Our farmers are dying at work," they add.
Museum security are then seen putting black screens in front of them before the room is evacuated.
A group called Riposte Alimentaire (Food Counterattack) claimed responsibility for the stunt.
In a statement posted to X, formerly Twitter, it said the protest was part of efforts to integrate "food into the general social security system".
It said that the current model for food "stigmatises the most precarious and does not respect our fundamental right to food".
The group called for a food card worth €150 (£128) to be given to citizens each month to be used on food.
The Louvre said that members of Riposte Alimentaire, which it described as an environmental movement, sprayed pumpkin soup on the painting at around 10:00 local time (09:00 GMT), and that there was no damage.