French Justice offered the attackers to pay compensation. The story behind "an adored symbol" that has already suffered other attacks.
With the passage of time – and the “Mona Lisa” is now more than five centuries old – the pigments degrade. It is a process that can be accelerated by exposure to light and by the eventual dirt produced by hundreds of thousands of visitors. The original work has been obscured but the Louvre does not want a restoration process, given the risks involved.