Artists around the world are paying tribute to the victims of Wednesday's attack on French satirical magazine Charlie Hebdo. The attack in Paris killed 12 people, among them four cartoonists.
Jim Brenneman was one of many artists moved by the tragedy who crafted a political cartoon in reaction to the shooting. "My heart goes out to the people of France. If those who carried out this horrendous act of cowardice truly believe it will prevent the free expression of ideas, they are sadly mistaken," Brenneman wrote to CNN.
See more reactions from artists in the gallery above. If you have an artistic tribute you'd like to share, upload it to CNN iReport.