At my retail job they provide paint supplies for employees to obviously paint. There are no listed rules, but it's generally been done for an art contest. The past few days I've just been painting because I'm here way earlier than when I actually start.
Yesterday I painted a piece that was a black background, red eyes in the distance, and very blocky/cartoons swords in the foreground, some of which had blood on them. I left that painting under one of my other paintings when I left for the day, planning on doing more today.
When I arrived, my painting was gone. I spoke to a manager and she dodged my questions with one word answers then left. Later in the day when I asked her where it was, she said it was in the manager's office and once again left.
Can I get punished over this? The art is by no means graphic, but still displays violence. That said, someone leaves “Murica Gunz” style magazines in the break room and nothing has happened with that. No actual people are depicted on the piece. While it was left in a public space, it again was underneath another painting, and was not meant to be displayed as part of their art competition.