On August 20, 2014, a man splashed a red substance (later confirmed to be blood) on a blank gallery wall on the third floor of the Whitney’s ongoing Jeff Koons retrospective. He also inscribed some graffiti in black ink.

The man was quickly apprehended by security and removed by the police, who took him to a hospital for evaluation. He was eventually identified as Canadian performance artist Istvan Kantor, who was acting under the guise of “Monty Cantsin,” an “open-source, multi-use” identity associated with Neoism.

The floor was temporarily closed, but reopened within two hours. No art was damaged.