Petition Project is a written note found in Dishonored 2.
I loved your idea for a petition, so I wrote it up at once. Of course, the Palace Grand Guard refused to take it. So it seems that, as Luca's political decoy, you're the only one who might be able to bring it to the Duke's attention. This is asking a lot from you, but if it succeeds, the petition could make a tremendous difference in Karnaca.
Here's the letter:
Duke Luca Abele,
As you know, the silver mines have been pressed beyond capacity, resulting in constant danger for the miners, and completely contaminating the surrounding district.
There is, however, a possible solution, which I hope you will consider, and put your support behind. I am preparing a petition asking the wealthy individuals who profit from the silver trade to accept a +20% tax on silver that will be applied to improving the lives of the miners and their families. Eventually, the increased silver prices will also reduce the demand on the mines, slowing the dust falling on the Batista District.
I would be grateful if you would agree to be the first signatory on my upcoming petition!
The note can be found in a room in the Duke's Chambers during the mission The Grand Palace.