A guy wearing a wig was arrested after smashing a piece of cake at the Mona Lisa.

A man dressed as an aged woman in a wheelchair smeared a slice of cake at the Mona Lisa in Paris.

Security personnel at the Louvre Museum escorted the man away Sunday as he spoke in French about the planet, according to a video uploaded on social media.

"Consider the Earth! There are those who are wreaking havoc on the planet! Consider this.

Think of the Earth, artists say. That is why I did it "According to The Associated Press, he says.

Another video showed someone removing the cake from the glass protecting the Mona Lisa, while people in the crowd held their phones up to record the incident's aftermath.

According to the Associated Press, the 36-year-old guy was arrested and taken to a psychiatric unit.

Leonardo da Vinci created the first Mona Lisa painting between 1503 and 1519.

According to the Louvre's website, the oil painting is displayed in the museum's largest room.

This is not the first time the classic painting has caused controversy. After being damaged in an acid assault in the 1950s, the protective glass was installed.

The Mona Lisa vanished from the Louvre in 1911. There were no leads for more than two years, until someone tried to sell the picture to an Italian art dealer, who notified authorities.

"As a result, the Mona Lisa was found — and her reputation grew even more," the Louvre writes on its website.