Cartoonist Ann Telnaes has resigned from the Washington Post after it refused to publish a cartoon satirizing its owner, Jeff Bezos.

Ann Telnaes, a Pulitzer Prize-winning cartoonist, said in a blog post that it was the first time the Post had rejected a drawing because of whom it targeted.

I’ve never had a cartoon killed because of who or what I chose to aim my pen at,” cartoonist Ann Telnaes said.