[WATCH] Climate change protester smears cake on world-famous Mona Lisa painting

A man disguised as an old woman in a wheelchair smeared cake on the outer protective glass of the Mona Lisa at the Louvre in Paris on Monday.

In a video shared on social media, an activist could be seen smearing cake across the glass case protecting it.

According to bystanders, the man who was dressed as an old lady jumped out of a wheelchair before attempting to smash the protective glass in front of the Leonardo da Vinci painting.

As the man was escorted from the building by security, he said: “Think about the Earth; there are people who are destroying the Earth; think about it. All the artists tell you to think about the Earth; that's why I did this. Think about the planet.”

At this time, it is not thought that the painting was damaged.

The Mona Lisa by Leonardo da Vinci was acquired by King Francis I of France and is now the property of the French Republic. It has been on permanent display at the Louvre in Paris since 1797. The Mona Lisa is one of the most valuable paintings in the world and symbolises the Italian Renaissance.